Browse Topic: Titanium alloys

Items (4,179)
ABSTRACT This paper addresses candidate technologies for attaching steels to selected lightweight materials. Materials of interest here include aluminum and titanium alloys. Metallurgical challenges for the aluminum-to-steel and titanium-to-steel combinations are first described, as well as paths to overcome these challenges. Specific joining approaches incorporating these paths are then outlined with examples for specific processes. For aluminum-to-steel joining, inertia, linear, and friction stir welding are investigated. Key elements of success included rapid thermal cycles and an appropriate topography on the steel surface. For titanium-to-steel joining, successful approaches incorporated thin refractory metal interlayers that prevented intimate contact of the parent metal species. Specific welding methods employed included resistance mash seam and upset welding. In both cases, the process provided both heat for joining and a relatively simple strain path that allowed significant
Gould, Jerry E.Eff, MichaelNamola, Kate
ABSTRACT This paper reviews research that has been conducted to develop inductively assisted localized hot forming bending technologies, and to use standardized welding tests to assess the practicality and potential benefits of adopting stainless based consumables to weld both existing and evolving armor alloys. For the titanium alloy Ti6Al4V it was determined that warming the plate to circa 600°F would improve the materials ductility (as measured by reduction of area) from ~18 to 40% without exposing the material to a temperature at which atmospheric contamination would be significantly deleterious. For the commercial alloy BB and class 1 armor alloy it was found that there was little effect on the charpy impact toughness and the proof strength as a result of processing at 900 °F with either air cool or water quench and there was an added benefit of lower residual stresses in the finished bends compared to cold formed bends. Heating “alloy BB” to 1600 °F followed by water quench
Lawmon, JohnAlexandrov, BoianDuffey., MatthewNgan., Tiffany
ABSTRACT The armor research and development community needs a more cost-effective, science-based approach to accelerate development of new alloys (and alloys never intended for ballistic protection) for armor applications, especially lightweight armor applications. Currently, the development and deployment of new armor alloys is based on an expert-based, trial-and-error process, which is both time-consuming and costly. This work demonstrates a systematic research approach to accelerate optimization of the thermomechanical processing (TMP) pathway, yielding optimal microstructure and maximum ballistic performance. Proof-of-principle is being performed on titanium alloy, Ti-10V-2Fe-3Al, and utilizes the Hydrawedge® unit of the Gleeble 3800 System (a servo-hydraulic thermomechanical testing device) to quickly evaluate mechanical properties and simulate rolling schedules on small samples. Resulting mechanical property and microstructure data are utilized in an artificial intelligence (AI
Lillo, ThomasChu, HenryAnderson, JeffreyWalleser, JasonBurguess, Victor
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, MatiasFoltz, John
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, JohnRuiz-Aparicio, LuisBerry, DavidPorter, Rick
This specification covers a titanium alloy in the form of sheet, strip, and plate up through 4 inches (101.6 mm) (see 8.5
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) in nominal diameter or least distance between parallel sides, inclusive, and maximum cross-sectional area of 32 square inches (206.5 cm2), forgings of thickness up through 4.000 inches (101.60 mm), inclusive, and maximum cross-sectional area of 32 square inches (206.5 cm2), and stock for forging of any size (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of round bar and wire 0.625 inch (15.88 mm) and under in nominal diameter or thickness (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of sheet and strip up to 0.143 inch (3.63 mm), inclusive, in nominal thickness (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification establishes requirements for titanium forgings of any shape or form from which finished parts are to be made (see 2.4.4, 8.3, and 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 1.000 inch (25.40 mm) in diameter or least distance between parallel sides, inclusive, forgings of thickness up through 1.000 inch (25.40 mm), inclusive, high-strength fastener stock up through 1.250 inch (31.75 mm), inclusive, and stock for forging of any size (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of sheet
AMS G Titanium and Refractory Metals Committee
This research explores the experimental analysis of titanium alloy using an innovative approach involving a 2–7% carbon nanotube (CNT)-infused cubic boron nitride (CBN) grinding wheel. Employing a full-factorial design, the study systematically investigates the interactions among varied wheel speed, workpiece feed rate, and depth of cut, revealing compelling insights. The integration of CNTs in the CBN grinding wheel enhances the machining performance of titanium alloy, known for its high strength and challenging machinability. The experiment varies CNT infusion levels to assess their impact on material removal rate (MRR) and surface finish. Significantly, MRR is influenced by CNT content, with 5% and above demonstrating optimal performance. The 7% CNT-CBN wheel exhibits a remarkable 61% improvement in MRR over the conventional CBN wheel. Interaction studies highlight the pivotal role of depth of cut, indicating that slower speeds and feeds, combined with increased depth of cut
Stephen, Deborah SerenadeSethuramalingam, Prabhu
This specification covers a titanium alloy in the form of sheet, strip, and plate up through 4.000 inches (101.60 mm), inclusive, in thickness (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers the procedures for approval of products of premium-quality titanium alloys and the controls to be exercised in producing such products
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 6.000 inches (152.40 mm), inclusive, in nominal diameter or least distance between parallel sides, forgings of thickness up through 6.000 inches (152.40 mm), inclusive, and stock for forging of any size (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) in nominal diameter or least distance between parallel sides, inclusive, 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
This specification covers metal products fabricated by direct metal deposition
AMS AM Additive Manufacturing Metals
This specification covers a titanium alloy in the form of forgings up to 4.000 inches (101.60 mm), inclusive, and forging stock (see 8.6
AMS G Titanium and Refractory Metals Committee
Hydraulic systems in aircraft largely comprise of metallic components with high strength to weight ratios. Some examples of such material include Aluminum and Titanium alloys which are typically chosen for low and high-pressure applications respectively. For aircraft fluid conveyance products, hydraulic conduits are fabricated by axisymmetric turning to support flow conditions. The hydraulic conduits can have grooved interfaced design within for placement of elastomeric sealing components. This article presents a systematic study carried out on common loads experienced by fluid carrying conduits and the failure modes induced. Firstly, a static structural analysis was carried out on each of the geometries of the test articles to identify the locations having areas of high stress concentration. Test articles of various wall thicknesses and internal diameters were pressure impulse tested at different conditions of side loads to identify cycle numbers till failure and failure locations. On
Paidimarri, VishalJacob, KrupaHarish, UppuHovis, David
This specification covers procedures for identifying wrought products of titanium and titanium alloys
AMS G Titanium and Refractory Metals Committee
This specification covers procedures for ultrasonic immersion inspection of premium-grade wrought titanium and titanium alloy round billet 5 inches (127 mm) and over in nominal diameter (see 2.6.1). Metal alloy billets other than titanium may be tested to this specification with the use of suitable reference standards
AMS K Non Destructive Methods and Processes Committee
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
This specification covers a titanium alloy in the form of welding wire (see 8.5
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) in nominal diameter or least distance between parallel sides, inclusive, forgings of thickness up through 4.000 inches (101.60 mm), inclusive, with bars and forgings having a maximum cross-sectional area of 32 square inches (204.46 cm2), and stock for forging of any size (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars, forgings, and flash-welded rings up through 12.000 inches (304.80 mm), inclusive, in diameter or least distance between parallel sides, and stock of any size for forging or flash-welded rings. Bars, forgings, and flash-welded rings with a nominal thickness of 3.000 inches (79.20 mm) or greater shall have a maximum cross-sectional area of 113 square inches (729 cm2) (see 8.5
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars, wire, flash-welded rings 4.000 inches (101.60 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 flash-welded rings (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of sheet, strip, and plate 0.025 to 3.000 inches (0.64 to 76.20 mm), inclusive, in nominal thickness (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of sheet, strip, and plate 0.020 inch (0.50 mm) through 2.10 inches (53.3 mm), inclusive, in nominal thickness (see 8.5
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars, wire, flash-welded rings up through 4.000 inches (101.60 mm), inclusive, in diameter or least distance between parallel sides, and stock for flash-welded rings or heading of any size (see 8.6
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This specification covers a titanium alloy in the form of bars, wire, forgings, flash-welded rings, and stock for forgings or flash-welded rings up through 6.000 inches (152.40 mm) in nominal diameter or distance between parallel sides (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of extruded bars, shapes, and flash-welded rings up through 3.000 inches (76.20 mm), inclusive, in nominal diameter or least distance between parallel sides, and stock for flash-welded rings of any size (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification establishes the engineering requirements for the heat treatment of titanium and titanium alloy parts. Heat treatment of raw material by raw material producers, forge shops, or foundries shall be in accordance with the material procurement specification AMS-H-81200
AMS G Titanium and Refractory Metals Committee
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 8.7
AMS G Titanium and Refractory Metals Committee
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
AMS G Titanium and Refractory Metals Committee
Lightweight materials are in great demand in the automotive sector to enhance system performance. The automotive sector uses composite materials to strengthen the physical and mechanical qualities of light weight materials and to improve their functionality. Automotive elements such as the body shell, braking system, steering, engine, battery, seat, dashboard, bumper, wheel, door panelling, and gearbox are made of lightweight materials. Lightweight automotive metals are gradually replacing low-carbon steel and cast iron in automobile manufacture. Aluminium alloys, Magnesium alloys, Titanium alloys, advanced high-strength steel, Ultra-high strength steel, carbon fiber-reinforced polymers, and polymer composites are examples of materials used for light weighing or automobile decreased weight. The ever-present demand for fuel-efficient and ecologically friendly transport vehicles has heightened awareness of lowering weight and performance development. Titanium alloys properties are
Ramana Murty Naidu, S. C. V.Kalidas, N.Venkatachalam, SivaramanMukuloth, SrinivasnaikAsary, Abdul RabNaveenprabhu, V.Vishnu, R.Vellingiri, Suresh
This specification establishes the requirements for a chemical conversion coating on titanium alloys
AMS B Finishes Processes and Fluids Committee
This specification covers a procedure for revealing the macrostructure and microstructure of titanium alloys
AMS B Finishes Processes and Fluids Committee
This specification covers a titanium alloy in the form of sheet, strip, and plate in thicknesses up to 4.000 inches (101.60 mm), inclusive (see 8.5
AMS G Titanium and Refractory Metals Committee
The U.S. Army fields a multitude of aircraft mission design series (MDS) developed by several different original equipment manufacturers with varying mission requirements and flight profiles. The structural analysis in this work assumes the materials, tooling, skillsets, and capabilities are organically available and proper at the repair location. Army Combat Capabilities Development Command, Redstone Arsenal, Alabama The U.S. Army operates and maintains several aircraft MDS to meet the warfighter's multidomain mission. Aircraft fielded by the U.S. Army originate from multiple equipment manufacturers. These aircraft include rotary-wing configurations such as the AH-64D/E Apache, CH-47F Chinook, and H-60A/L/V/M Blackhawk aircraft which significantly vary in mission parameters and flight profiles. These aircraft contain structures made from a majority aluminum, steel, and titanium alloys which have dominated aircraft designs for much of the history of powered flight. However, the use of
The U.S. Army operates and maintains several aircraft MDS to meet the warfighter’s multidomain mission. Aircraft fielded by the U.S. Army originate from multiple equipment manufacturers. These aircraft include rotary-wing configurations such as the AH-64D/E Apache, CH-47F Chinook, and H-60A/L/V/M Blackhawk aircraft which significantly vary in mission parameters and flight profiles. These aircraft contain structures made from a majority aluminum, steel, and titanium alloys which have dominated aircraft designs for much of the history of powered flight. However, the use of advanced composite material systems such as fiberglass, carbon, and aramid fiber reinforcement with high performance epoxy resins has steadily increased to optimize structural designs and improve mission capability
This specification covers a titanium alloy in the form of compacts produced by pressing and sintering a blend of elemental titanium powder and aluminum-vanadium alloy powder (see 8.6
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of bars up through 4.000 inches (101.60 mm) in nominal diameter or least distance between parallel sides, inclusive, forgings of thickness up through 4.000 inches (101.60 mm), inclusive, with bars and forgings having a maximum cross-sectional area of 32 square inches (206.5 cm2), and stock for forging of any size (see 8.6
AMS G Titanium and Refractory Metals Committee
Titanium alloys are deemed as one amongst the light weight material most preferably adopted in numerous engineering applications due to its exceptional features such as corrosive resistance and thermal strength. These alloys are predominantly used in components of IC engines such as valves and springs, connecting rods. Especially Ti-Grade 5 adopted in aircraft, automobile parts ski plates and bicycles. The preliminary goal of this present research is to optimize the machining variables for Wire Electrical Discharge Machining (WEDM) of Ti-6Al-4V (Grade 5) to accomplish improved rate of material removal and surface finish. Taguchi’s design and analysis method was chosen for devising and examining the experiments by considering input factors (pulse duration and current). An L9 OA was utilized for experimentation to analyze the various output variables, such as surface finish and material removal rate, using the response analysis of Taguchi. ANOVA and interaction analysis also performed to
Pasupuleti, ThejasreeNatarajan, ManikandanKatta, Lakshmi NarasimhamuSomsole, Lakshmi NarayanaKiruthika, JothiSilambarasan, R
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, ManikandanPasupuleti, ThejasreeD, PalanisamyUmapathi, DKiruthika, JothiKotapati, Gowthami
This specification covers a titanium alloy in the form of sheet, strip, and plate from 0.020 inch (0.50 mm) through 4.000 inches (101.6 mm), inclusive, in thickness (see 8.4
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of forgings 4.400 inches (111.76 mm) and under in nominal diameter or least distance between parallel sides and a maximum cross-sectional area of 63.8 square inches (411.6 cm2) and under and forging stock of any size (see 8.7
AMS G Titanium and Refractory Metals Committee
This specification covers powdered metal products consolidated by hot isostatic pressing (HIP) of titanium alloy powder compacts
AMS G Titanium and Refractory Metals Committee
This specification covers titanium Ti 6Al-4V alloy in the form of investment castings
AMS G Titanium and Refractory Metals Committee
This specification covers a titanium alloy in the form of round bars up to 10 inches (254 mm), inclusive, in diameter
AMS G Titanium and Refractory Metals Committee
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