Browse Topic: Titanium

Items (1,657)

TITANIUM ROAD WHEELS: A COST-EFFECTIVE LOW-RISK ALTERNATIVE FOR LEGACY AND NEXT GENERATION COMBAT VEHICLES

2024-01-3781

11/15/2024

ABSTRACT The U.S. Army identified the use of advanced materials in next generation combat vehicles design as a focal technology area of interest and urged industry to develop replacements that realize weight, sustainment, and cost savings. An initial life cycle analysis suggests that using Titanium road wheels as an alternative to legacy road wheels could cut 555.6 lbs. and reduce cost by $39,760.00 per each M-1 tank over a life cycle of 8,000 mi, resulting with $71.72 savings per each pound reduced. Secondary side-effects of the weight reduction achieved by the Titanium road wheels include improvements such as fuel economy, mobility, transportability, and risk-reduction in the inclusion of emerging metal matrix composite technologies in next generation combat vehicles. The paper recommends conducting field evaluation and considering the application of Titanium road wheels in the M-1/M-88, M-109, AMPV, MPF, OMFV, DLP/FDL, and RCV (H) platforms Citation: R. Paytan, R. Mazor, “Titanium

Paytan, Ronnen, Mazor, Ronen

SUPERIOR BALLISTIC AND BLAST RESISTANCE IN ATI TITAN 27™ ALLOY WITH A NOVEL DEFORMATION MECHANISM

2024-01-3986

11/15/2024

ABSTRACT α-β titanium alloys are used in armor plate applications due to their capability to defend against ballistic threats while having a 40% lower density than steel. ATI 425® was developed as a cold-deformable alternative to Ti-6Al-4V with similar ballistic properties and improved blast performance owing to the alloy’s higher damage tolerance. ATI Titan 27™ is an evolutionary step forward on ATI 425® Alloy, and is being developed as a higher-performance titanium armor alloy owing to its greater than 10% improvement in strength with similar ductility and formability. Recent work has demonstrated a novel deformation mechanism that explains the improved cold deformation observed in both alloys over Ti-6Al-4V. This mechanism, a twinning of α-phase coinciding with slip in the β-phase, is unique among high-strength titanium alloys. Moreover, twinning is well known to be suppressed with high oxygen content, and ATI Titan 27™ Alloy has one of the highest oxygen targets across high

Foltz, John, Ruiz-Aparicio, Luis, Berry, David, Porter, Rick

LOW DISTORTION TITANIUM ALLOY IN LASER POWDER BED FUSION ADDITIVE MANUFACTURING

2024-01-3988

11/15/2024

ABSTRACT Titanium and its alloys offer superior strength at a fraction of the weight of steel or nickel-based alloys. Some α-β titanium alloys such as Ti-6Al-4V have been widely used in laser powder bed fusion additive manufacturing applications due to the historical cast-wrought data sets and the availability of this alloy in powder form, however this alloy presents challenges during the laser-based printing process of components due to the high residual stress in the material. Alternative β-rich Ti alloys such ATI Titan 23™ can offer superior printability, lower residual stress, and higher mechanical properties than Ti-6Al-4V in additive manufacturing applications. This study covers the assessment of ATI Titan 23™ as an alternative printable Ti alloy and the resulting microstructure, mechanical properties, and residual stress of the printed material. Citation: Garcia-Avila, Foltz, “Low Distortion Titanium Alloy in Laser Powder Bed Fusion Additive Manufacturing System,” In Proceedings

Garcia-Avila, Matias, Foltz, John

Performance Optimization of Ti-Steel Laser-Welded Joints Based on Optimized Support Vector Machine and Multi-Objective Salp Swarm Algorithm

05-18-02-0010

11/07/2024

The dissimilar welding of titanium to steel enables the integration of the advantageous properties of both metals, facilitating the design of lightweight, corrosion-resistant, and high-strength multifunctional composite structures. However, significant differences in their thermophysical properties pose substantial technical challenges in practical welding scenarios, necessitating careful selection of process parameters to enhance the quality and performance of the weld joint. This article establishes a support vector machine (SVM) model with laser power, welding speed, and laser spot diameter as independent variables, and the maximum residual stress and minimum yield strength of the weld joint as dependent variables. To improve prediction accuracy, the SVM model is optimized using the beluga whale optimization (BWO) algorithm. Taking the established model as the objective function, the multi-objective salp swarm algorithm (MSSA) is employed to optimize the laser welding process

Zhu, Yubin, Meng, Xiangli, Zhang, Xinran

COUPLING ASSEMBLY, THREADLESS - FLEXIBLE, FIXED CAVITY, SELF-BONDING

AS1652B (Current)

08/23/2024

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

Identification, Titanium and Titanium Alloy Wrought Products

AMS2809B (Current)

05/24/2024

This specification covers procedures for identifying wrought products of titanium and titanium alloys

AMS G Titanium and Refractory Metals Committee

Surface Properties of Shot-Peened and Plasma Sprayed Powder-Coated Alpha-Beta Titanium Alloy Implants

2024-01-5060

05/15/2024

The paramount importance of titanium alloy in implant materials stems from its exceptional qualities, yet the optimization of bone integration and mitigation of wear and corrosion necessitate advanced technologies. Consequently, there has been a surge in research efforts focusing on surface modification of biomaterials to meet these challenges. This project is dedicated to enhancing the surface of titanium alloys by employing shot peening and powder coatings of titanium oxide and zinc oxide. Comparative analyses were meticulously conducted on the mechanical and wear properties of both treated and untreated specimens, ensuring uniformity in pressure, distance, and time parameters across all experiments. The outcomes underscore the efficacy of both methods in modifying the surface of the titanium alloy, leading to substantial alterations in surface properties. Notably, the treated alloy exhibited an impressive nearly 12% increase in surface hardness compared to its untreated counterpart

Balasubramanian, K., Bragadeesvaran, S. R., Raja, R., Jannet, Sabitha

BOLT, MACHINE - HEXAGON HEAD, PD SHANK, TITANIUM AMS4967 (UNS R56400), .190-32 UNJF-3A

AS9633B (Current)

04/10/2024

E-25 General Standards for Aerospace and Propulsion Systems

Electroimpact Automatic Fan Cowl Riveter

2024-01-1922

03/05/2024

The Electroimpact Automatic Fan Cowl Riveter exhibits new and unique design features and automated process capabilities that address and overcome three primary technical challenges. The first challenge is satisfying the customer-driven requirement to access the entire fastening area of the fan cowl doors. This necessitates a unique machine design which is capable of fitting ‘inside’ a fan cowl door radius. The second challenge is determining drill geometry and drill process parameters which can produce consistent and high-quality countersunk holes in varying mixed-metal stack-up combinations consisting of aluminum, titanium, and stainless steel. The third challenge is providing the capability of fully automatic wet installation of hollow-ended titanium rivets. This requires an IML-side countersinking operation, depositing sealant throughout the OML and IML countersinks and the hole, automatically feeding and inserting a rivet which is only 5mm long and 6mm in head diameter and flaring

Merluzzi, James, Schultz, Rich, Ernsdorff, Bryan, Peterman, Randy, Luker, Zachary, Stansbury, Erin, Murakonda, Sai Krishna

Using Static Electricity to Enhance Biomedical Implants

TBMG-50201

03/01/2024

Researchers have created electrostatic materials that function even with extremely weak ultrasound, heralding the era of permanent implantable electronic devices in biomedicine. Recent research explores implantable medical devices that operate wirelessly, yet finding a safe energy source and protective materials remains challenging. Presently, titanium (Ti) is used due to its biocompatibility and durability. However, radio waves cannot pass through this metal, necessitating a separate antenna for wireless power transmission. Consequently, this enlarges the device size, creating more discomfort for patients

Fittings, Welded, Hydraulic, Titanium, Corrosion-Resistant Steel and Nickel, 3000 psi Hydraulic

AS1576G (Current)

02/23/2024

This document defines the requirements for weld fittings and machine weldments using an orbiting welding head suitable for use on cold worked 3AL-2.5V titanium, 21Cr-6Ni-9Mn CRES, and 718 nickel alloy tubing. Fitting standards covered by this specification include non-separable welded elbow, tee, and reducer fittings, and reconnectable 24-degree cone fittings, such as sleeves and unions

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

Impact of Notch Design on the Energy Absorption Characteristics of Aluminium Magnesium 5456 Tube under Axial Impact Load

2023-01-5122

02/23/2024

Over the years the vehicle population has drastically grown which increases the number of road accidents. The accident severity caused fatality and disability being reduced by introducing energy absorption materials (Crash tube). Over the years, researchers have used aluminium, magnesium, and titanium crash tubes to enhance the energy absorption characteristics during different crash scenarios. However crash tube will possess sufficient rigidity to absorb the impact force during collision but it is still challenging to identify the right material. At the same time, this paper aims to examine the energy absorption characteristics of Aluminium-Magnesium hybrid material (Al-Mg 5456) crash tube designs. Three designs were considered square, cylindrical, and hexagonal designs along with different notch designs to minimize the weight percentage of tubes. The LSDYNA results the oval notches performed better in energy absorption when compared to other designs. Hence, the present findings can

Krishnasamy, Prabu, Rajamurugan, G., Agarwal, Vyom, rai, Ritesh

Joining of Titanium and Stainless-Steel Rods with an Interlayer Using an Eco-Friendly Welding Process for Automobile Applications

2023-01-5126

02/23/2024

Solid rods of dissimilar metals are easily welded by friction welding. This process is a solid-state process where no fumes or gases are released which is friendly to the environment. In advanced engineering practice, joining Titanium (Ti) alloy and stainless steel (SS) is very important due to poor bonding strength in direct joining. These materials are easily joined by an interlayer technique using materials like nickel, silver, niobium, aluminum, and copper. Special surface geometry techniques hold the interlayer materials between dissimilar metals in different forms like coating, foils, and solid metals. In this investigation, the finite element method is used for modeling the process, and the Johnson-cook equation was used to find the analysis of output values with the defined material properties. The heat generated is calculated and numerically compared and analyzed with experimental results. Observations such as metallography, hardness, and tensile test were studied. The results

Balasubramanian, M., Prathap, P., Madhu, S.

Low Cycle Fatigue Behavior of Cerium-Modified Stainless Steel at Elevated Temperatures and the Impact of Aluminum/Zinc Ratio

2023-01-5140

02/23/2024

In fast breeder reactors, materials such as 10Zr-15Si titanium modified austenitic stainless steel are utilised for the cladding and wrapping of the fuel. Using Al/Zn ratios of 8 and 12 and a constant carbon content of 0.05%, the temperature dependency of the improved alloy's low cycle fatigue life was studied throughout a temperature range of 433-764 K. This evaluation was carried out over the whole temperature range. Under both of these circumstances and at all temperatures, cyclic hardening was seen in the alloy. Based on the cyclic stress response and micro processes of deformation, three temperature regions in the range of 433-764 K have been discovered for the alloy with an Al/Zn ratio. These temperature domains are as follows: predynamic strain ageing regime, dynamic strain ageing regime, and regime with active precipitation processes. All of these temperature domains occur between 433 and 764 K. The temperature dependence of fatigue life in both alloys revealed a peak at 573 K

Francis Xavier, J., Katherasan, D., Jayabalakrishnan, D., Maniyarasan, M., John Solomon, I.

Characterization of Enhanced Magnetorheological Fluid Damper and Its Influence on Sustainable Hard Turning of SS410

2023-01-5133

02/23/2024

Sustainable manufacturing, a term that has been used in the recent past on numerous occasions. A primary reason for it being in limelight, is that it does not cause any damage to the environment and also to the personal involved. Additionally, another important parameter of concern is the energy consumed during the machining process. One major reason for higher energy consumption is because of the presence of tool vibration. There have been several attempts made to reduce vibration and though they have been proved to be effective, they could be not classified under sustainable manufacturing. When used as a semi-active damper in metal cutting, magnetorheological fluid (MRF) has proven to be successful in vibration suppression. MRF is an intelligent non-Newtonian fluid that can change its viscosity instantly when a magnetic field is applied to it. They've utilised it as a damper in a number of areas because of this quality and its toughness. One significant drawback is the settling of

Ajay Vasanth, X., Sam Paul, P., Lawrance, G., Rajkumar, V., Senthilkumar, K.

Load Bearing Analysis of Titanium Surface Ground with CBN Wheel and 6% CNT-CBN Wheel

2023-28-0080

11/10/2023

Surface integrity is an important factor in the effective functioning of a component. For this reason, the surface finish is given as meticulous attention as possible, while quality checks are rigorous. The process parameters affecting surface roughness are carefully controlled, with many preventive measures enforced to avoid deviation from the tolerance limits. Surface finish is an important part of the load-bearing properties of a surface as the asperities on its surface first come into contact with the mating surfaces. On contact, the asperities are flattened, and there is debris formation. These asperities are critical in joint replacements where Titanium is a material of choice, as the debris can react with bones and even cause necrosis of bone. The surface finish of Titanium is important as the asperities can function as points of stress when subjected to loads. Stress concentrators are detrimental to a material’s life; therefore, a part’s surface finish becomes critical. This

Stephen, Deborah Serenade, V, Praveena, Av, Ramanathan, S, Sujith

Multiple Regression Analysis for Ti-6Al-4V Wire Electrical Discharge Machining (Grade 5) for Light Weight Automobile Applications

2023-28-0163

11/10/2023

Wire Electrical Discharge Machining (WEDM) is a variant of the electrical discharge machining (EDM) process, which represents an innovative method for the removal of material from a workpiece. The aforementioned process is frequently employed for the machining of harder materials that possess intricate geometries. Titanium alloys are a class of lightweight materials that find extensive utilization in many technical applications. Titanium Grade-5 is a titanium-based alloy that exhibits enhanced mechanical strength and improved resistance to corrosion. The objective of this exploratory analysis is to establish empirical correlations between the selected input variables, namely ‘Pulse on,’ ‘Pulse off,’ and peak current, and the desired output measures, which are material removal rate and surface roughness. The experimental design employed the Taguchi method to effectively organize the combination of tests by considering input factors. Multiple regression analysis has been developed to

Natarajan, Manikandan, Pasupuleti, Thejasree, D, Palanisamy, Umapathi, D, Kiruthika, Jothi, Kotapati, Gowthami

Structure and properties of a nano-carbon composite surface coating for roll-to-roll manufacturing of titanium fuel cell bipolar plates

2023-32-0138

09/29/2023

In the 1st generation Toyota "MIRAI" fuel cell stack, carbon protective surface coating is deposited after individual Ti bipolar plate being press-formed into the desired shape. Such a process has relatively low production speed, not ideal for large scale manufacturing. A new coating concept, consisting of a nanostructured composite layer of titanium oxide and carbon particles, was devised to enable the incorporation of both the surface treatment and the press processes into the roll-to-roll production line. The initial coating showed higher than expected contact resistance, of which the root cause was identified as nitrogen contamination during the annealing step that inhibited the formation of the composite film structure. Upon the implementation of a vacuum furnace chamber as the countermeasure, the issue was resolved, and the improved coating could meet all the requirements of productivity, conductivity, and durability for use in the newer generation of fuel cell stacks

YAMASAKI, Takenori, IKEDA, Kotaro, SATO, Toshiki

Titanium Tubing, Welded 40 ksi (276 MPa) Yield Strength

AMS4941H (Current)

08/01/2023

This specification covers one grade of commercially pure titanium in the form of welded tubing

AMS G Titanium and Refractory Metals Committee

Titanium Sheet, Strip, and Plate Commercially Pure Annealed, 55 ksi (379 MPa) Yield Strength

AMS4900S (Current)

07/24/2023

This specification covers one grade of commercially pure titanium in the form of sheet, strip, and plate 1.000 inch (25.40 mm) and under in nominal thickness (see 8.5

AMS G Titanium and Refractory Metals Committee

Aluminum Alloy, Alclad Sheet and Plate 4.3Cu - 1.4Mg - 0.60Mn (Alclad 2524-T3) Solution Heat Treated and Cold Worked

AMS4296D (Current)

05/10/2023

This specification covers an aluminum alloy in the form of sheet and plate 0.032 to 0.310 inch (0.81 to 7.87 mm), inclusive, in thickness, clad on both sides (see 8.5

AMS D Nonferrous Alloys Committee

Aluminum Alloy, Sheet and Plate, Alclad 4.4Cu - 1.5Mg - 0.60Mn (Alclad 2024, -T81 Sheet, -T851 Plate) Solution Heat Treated, Cold Worked and Artificially Aged

AMS4478B (Current)

03/20/2023

This specification covers an aluminum alloy in the form of Alclad sheet and plate 0.010 to 0.499 inch (0.254 to 12.67 mm), inclusive, in thickness, supplied in the -T81/-T851 temper (see 8.5

AMS D Nonferrous Alloys Committee

Titanium Sheet, Strip, and Plate Commercially Pure Annealed 40.0 ksi (276 MPa) Yield Strength

AMS4902M (Current)

03/20/2023

This specification covers one grade of commercially pure titanium in the form of sheet, strip, and plate up through 1.000 inch (25.40 mm), inclusive

AMS G Titanium and Refractory Metals Committee

Titanium Alloy Bars, Forgings and Forging Stock 13V - 11Cr - 3Al Solution Heat Treated and Aged

AMS6926D (Current)

11/14/2022

This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) inclusive, in nominal diameter or least distance between parallel sides, forgings of thickness up through 4.000 inches (101.60 mm), inclusive, and stock for forging of any size (see 8.6

AMS G Titanium and Refractory Metals Committee

Titanium Alloy, Bars and Rods 3Al - 8V - 6Cr - 4Mo - 4Zr Consumable Electrode Melted Solution Heat Treated and Centerless Ground or Peeled and Polished

AMS4958F (Current)

11/02/2022

This specification covers a titanium alloy in the form of bars and rods 1.00 inch (25.4 mm) and under in nominal diameter

AMS G Titanium and Refractory Metals Committee

Free Vibration Analysis of TiO2 on Carbon/Epoxy Composite Tubes

2022-01-5078

10/14/2022

This research paper determines the vibrational response of different weight percentages of titanium dioxide (TiO2) nanoparticles on carbon/epoxy composite tubes. The modal analysis was performed using Ansys Composite PrepPost (ACP) with fixed-fixed and cantilever boundary conditions. The models were analyzed with a winding angle of ±55° and compared with winding angles ±65° and ±75°. Modal analysis was also performed by embracing flax fibers on Carbon Fiber-Reinforced Polymers (CFRP) nanocomposite tubes with different layering sequences such as Carbon/Carbon/Carbon/Flax (C/C/C/F), Carbon/Flax/Carbon/Flax (C/F/C/F), and Carbon/Flax/Flax/Flax (C/F/F/F). The results indicated that, by the addition of TiO2 nanoparticles, the natural frequency of CFRP nanocomposite tubes gets increased. The natural frequencies were found to be higher in the fixed-fixed case than in cantilever conditions. The natural frequency of nanocomposite tubes with a winding angle of ±55° had shown approximately 4% and

Praveenbabu, A.R., Naveen, Jesuarockiam

Titanium Alloy, Forgings 5Al - 2.5Sn Annealed, 110 ksi (758 MPa) Yield Strength

AMS4966S (Current)

10/13/2022

This specification covers a titanium alloy in the form of forgings up through 4.0 inches (102 mm) and under in nominal diameter or least distance between parallel sides and 16 square inches (103 cm2) and under in cross-sectional area and stock of any size for forging (see 8.6

AMS G Titanium and Refractory Metals Committee

Tolerances, Corrosion- and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire

AMS2241T (Current)

10/07/2022

This specification covers established manufacturing tolerances applicable to corrosion- and heat-resistant steel, iron alloy, titanium, and titanium alloy bars and wire. These tolerances apply to all conditions, unless otherwise noted. The term “excl” is used to apply only to the higher figure of the specified range

AMS F Corrosion and Heat Resistant Alloys Committee

Ultrathin Holographic Display

TBMG-46730

10/01/2022

An ultrathin display for holographic images consists of a thin film of titanium filled with tiny holes that precisely correspond with each pixel in a liquid crystal display (LCD) panel. This film acts as a “photon sieve” — each pinhole widely diffracts light emerging from them, resulting in a high-definition 3D image observable from a wide angle

Steel, Corrosion-Resistant, Bars, Wire, Forgings, Rings, and Extrusions 15Cr - 4.5Ni - 0.30Cb (Nb) - 3.5Cu Solution and Precipitation Heat Treated (H1150

AMS5659/H1150 (Current)09/14/2022

This specification covers a corrosion-resistant steel product 12 inches (305 mm) and under in nominal diameter, thickness or for hexagons, least distance between parallel sides, and having a maximum cross-sectional area of 144 square inches (930 cm2) in the solution and precipitation heat treated (H1150) condition

AMS F Corrosion and Heat Resistant Alloys Committee

Chemical Check Analysis Limits Nickel, Nickel Alloys, and Cobalt Alloys

AMS2269G (Current)

09/14/2022

This specification defines limits of variation for determining acceptability of the composition of cast or wrought nickel, nickel alloy, and cobalt alloy parts and material acquired from a producer

AMS F Corrosion and Heat Resistant Alloys Committee

Standard Stock Removal Allowance Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing

AS1182E (Current)

09/08/2022

The purpose of this document is to provide the aerospace industry with standards for minimum stock removal allowances for bars and mechanical tubing to provide surfaces which are free from decarburization, seams, laps, tears, cracks, pits, and other injurious surface imperfections

AMS E Carbon and Low Alloy Steels Committee

Niobium: Magic Metal for Battery Anodes

TBMG-46515

09/01/2022

The element niobium (Nb), a transition metal, stands ready to improve the performance of one of the lithium-ion (Li-ion) battery’s confusing array of possible electrode chemistries — the LTO (lithium titanium oxide) anode, which after graphite is the second most-produced. During battery charging, lithium ions leave the positive cathode and move through the battery’s electrolyte to take up positions of higher energy in the anode. During discharge, this process reverses and drives electrons through an external circuit to power the load

Titanium Alloy Bars, Forgings and Forging Stock, 8Al - 1Mo - 1V, Duplex Annealed

AMS6910D (Current)

08/19/2022

This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm), inclusive, in nominal diameter or least distance between parallel sides, forgings of thickness up through 4.000 inches (101.60 mm), inclusive, and stock for forging of any size (see 8.6

AMS G Titanium and Refractory Metals Committee

Titanium Alloy Bars, Forgings and Forging Stock, 6.0Al - 4.0V, Solution Heat Treated and Aged

AMS6930G (Current)

08/19/2022

This specification covers a titanium alloy in the form of round, hexagon and square bars and forgings up through 3.000 inches (76.20 mm), inclusive, rectangular bar and forgings of thickness up through 4.000 inches (101.60 mm), inclusive, and forging stock of any size (see 8.6

AMS G Titanium and Refractory Metals Committee

Cross Reference for Materials for Fluid Systems Components, Including Military and Federal Specifications and Their International Equivalents

AIR1564C (Current)

08/19/2022

This SAE Aerospace Report (AIR) provides a cross reference for SAE material standards to other similar standards. The SAE Committee G-3 invites comments and recommendations for the addition of materials and information for inclusion into this informational report. No attempt has been made to obtain samples of the materials or conduct physical and chemical analyses to determine if they are equivalent. Anyone using this AIR, therefore, is cautioned to verify for themselves the interchangeabillity of the specific materials. Additional contributions of missing or supplemental data should be directed to SAE marked for the attention of Committee G-3

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies

Aluminum Alloy, Alclad Sheet 4.4Cu - 1.5Mg - 0.60Mn (2024-T4 Flat Sheet) Solution Heat Treated, High Formability

AMS4279C (Current)

08/05/2022

This specification covers an aluminum alloy in the form of sheet clad on both sides with a different alloy for sheet thicknesses of 0.020 to 0.128 inches (0.51 to 3.25 mm), inclusive, in nominal thickness (see 8.5

AMS D Nonferrous Alloys Committee

Titanium Tubing, Seamless Annealed, 40.0 ksi (275 MPa) Yield Strength

AMS4942H (Current)

07/08/2022

This specification covers one grade of commercially pure titanium in the form of seamless tubing

AMS G Titanium and Refractory Metals Committee

Sampling and Testing of Wrought Titanium Raw Material Except Forgings and Forging Stock

AMS2368E (Current)

07/08/2022

This specification provides a standard set of procedures for sampling and testing to meet the requirements of material specifications for wrought titanium and titanium alloy products, except forgings and forging stock. It is applicable to the extent specified in a material specification

AMS G Titanium and Refractory Metals Committee

Titanium, Sheet, Laminated, Surface Bonded

AMS4949C (Current)

07/06/2022

This specification covers titanium in the form of laminated sheet

AMS G Titanium and Refractory Metals Committee

Understanding Titanium’s Biocompatibility

TBMG-46146

07/01/2022

Scientists used photoelectrochemical measurement and x-ray photoelectron spectroscopy to clarify the source of titanium’s biocompatibility when implanted into the body, as with hip replacements and dental implants. They find that its reactivity with the correct ions in the extracellular fluid allows the body to recognize it. This work may lead to a new generation of medical implants that last longer

Titanium Alloy, Hot Rolled Sheet and Strip 5Al - 1Fe Annealed

AMS4948 (Current)

06/20/2022

This specification covers a titanium alloy in the form of hot rolled sheet and strip up to 0.165 inch (4.20 mm), inclusive, in thickness

AMS G Titanium and Refractory Metals Committee

Titanium Alloy Powder Titanium Ti-5553 (Ti - 5Al - 5Mo - 5V - 3Cr

AMS4960 (Current)

06/02/2022

This specification covers a titanium alloy in the form of prealloyed powder

AMS G Titanium and Refractory Metals Committee

Titanium Alloy Powder 6Al - 4V

AMS4998F (Current)

05/26/2022

This specification covers a titanium alloy in the form of prealloyed powder

AMS G Titanium and Refractory Metals Committee

Titanium Alloy Extrusions and Flash Welded Rings 8Al - 1Mo - 1V Solution Heat Treated and Stabilized

AMS4933G (Current)

05/26/2022

This specification covers a titanium alloy in the form of extruded bars, tubes, and shapes, and flash welded rings up through 4.000 in2 (25.81 cm2) cross-section and stock for flash welded rings

AMS G Titanium and Refractory Metals Committee

Titanium Alloy, Bars, Wire, Forgings, and Rings 6Al - 6V - 2Sn Solution and Precipitation Heat Treated

AMS4979K (Current)

05/16/2022

This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings 4.000 inches (101.60 mm) and under in nominal diameter or least distance between parallel sides and stock of any size for forging or flash welded rings (see 8.8

AMS G Titanium and Refractory Metals Committee

NIOBIUM: magic metal for battery anodes

22AUTP05_0305/01/2022

Increased cell capacity and rapid recharging in thermal extremes are potential benefits of electrode chemistries fortified by the humble element Nb. The element niobium (Nb), a transition metal, stands ready to improve the performance of one of the lithium-ion battery's confusing array of possible electrode chemistries - the LTO (lithium titanium oxide) anode, which after graphite is the second most-produced. During battery charging, lithium ions leave the positive cathode and move through the battery's electrolyte to take up positions of higher energy in the anode. During discharge, this process reverses and drives electrons through an external circuit to power the load. Most desired in an anode is large surface area in which a great number of lithium ions can take positions, giving potential for high energy storage. Also desirable is an open structure offering little resistance to the movement of ions, to allow rapid charge/discharge without excess heating

Cameron, Kevin

Titanium 6-Aluminum 4-Vanadium Powder for Additive Manufacturing

AMS7015 (Current)

04/22/2022

This specification covers a titanium alloy in the form of pre-alloyed powder

AMS AM Additive Manufacturing Metals

Titanium 6 - Aluminum 4 - Vanadium Powder for Additive Manufacturing, Extra Low Interstitial (ELI

AMS7017 (Current)

04/07/2022

This specification covers a titanium alloy in the form of pre-alloyed powder

AMS AM Additive Manufacturing Metals

Influences of Martensite Morphology and Precipitation on Bendability in Press-Hardened Steels

2022-01-0238

03/29/2022

Performance evaluation of martensitic press-hardened steels by VDA 238-100 three-point bend testing has become commonplace. Significant influences on bending performance exist from both surface considerations related to both decarburization and substrate-coating interaction and base martensitic steel considerations such as structural heterogeneity, i.e., banding, prior austenite grain size, titanium nitride (TiN) dispersion, mobile hydrogen, and the extent of martensite tempering as result auto-tempering upon quenching or paint baking during vehicle manufacturing. Deconvolution of such effects is challenging in practice, but it is increasingly accepted that surface considerations play an outsized role in bending performance. For specified surface conditions, however, the base steel microstructure can greatly influence bending performance and associated crash ductility to meet safety and mass-efficiency targets. This study reports and elucidates the positive effect of niobium

Enloe, Charles M., Mohrbacher, Hardy

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