Browse Topic: Magnesium

Items (1,725)
Purified nickel and a large number of MgTi2 / NiO2 catalysts with various MgTi2 loadings were produced using the traditional incipient wetness method. X-ray crystallography and Fourier-transform infrared spectroscopy were used to examine the catalysts. To understand the material's microstructure better, the researchers investigated oxygen adsorption at 90K. The amine titration method was used to investigate the acidic characteristics of these catalysts. In a study on cumene cracking, these catalysts were employed. The catalyst was found to be amorphous up to a loading of 12 weight percent MgTi2, but at higher loadings, crystalline MgTi2 phase formed on an amorphous silica substrate. When NiO2 is doped with more MgTi2, there are significant differences in the structure, surface acidity, and catalytic activity of the catalysts. Catalysts with a higher MgTi2 loading are noticeably more acidic than those with a lower MgTi2 loading. A correlation between the amount of cracking activity and
Ashok Kumar, B.Dhiyaneswaran, J.Selvaraj, MalathiPradeepkumar, M.Shajeeth, S.
This study presents the mechanical characterization studies on 3 wt.% graphene (Gr) filled magnesium matrix composite reinforced with different weight fractions (4, 8, 12, 16, and 20 wt.%) of titanium carbide (TiC) particles. The matrix is AZ91 alloy, and the nano magnesium composite (NMC) is fabricated via a squeeze casting approach. The lightweight NMC is a potential solution for the automobile industry, as it reduces greenhouse gas emissions and contributes to environmental sustainability. Gr is added to enhance the composite's thermal endurance and mechanical strength. Mechanical and corrosion studies are performed as per the ASTM standards. The inclusion of Gr and 16 wt.% TiC tends to enhance the mechanical durability and corrosion resilience of the NMC when compared with other fabricated composites and cast alloys. The uniform dispersal of NC and TiC and better mould properties lead to better strength. Higher inclusion of TiC (20 wt.%) leads to brittleness, thereby decreasing the
Senthilkumar, N.
The present aim of the investigation is to prepare and evaluate the excellence of boron nitride (BN) and silicon carbide nanoparticles on characteristics of magnesium alloy (AZ91D) hybrid nanocomposite. This constitution of AZ91D alloy hybrid nanocomposite is made through the liquid state processing route, which helps to improve the spread of particles in the AZ91D matrix. The impact of BN and SiC on microstructural and mechanical properties like tensile strength, hardness, and impact strength of AZ91D alloy composites are studied, and its investigational results are compared. Besides, microstructural studies have revealed that the structure of composite is found to have better BN and SiC particle dispersion and uniformity. The 5 percentage in weight (wt%) of BN and 5 wt% of SiC facilitated better tensile strength (183 MPa), hardness (85HV), and impact strength (21.4J/mm2) behaviour, which are 26, 30, and 35% better than the monolithic AZ91D alloy. This AZ91D/5wt% BN and 5wt% SiC
Venkatesh, R.Kaliyaperumal, GopalManivannan, S.Karthikeyan, S.Mohanavel, VinayagamSoudagar, Manzoore Elahi MohammadKarthikeyan, N.
Magnesium is the lightest material than aluminium and has a better specific strength, which is utilized for weight management applications. This research developed the magnesium (Mg) matrix with 0.1, 0.2, 0.3, and 0.5 percentages in weight (wt%) of zirconium (Zr) particles (grain refinement agent) via the squeeze cast technique. The argon inert gas is limit oxidation during the melting of Mg. The influence of Zr on the functional properties of Mg is studied and related to monolithic Mg without the Zr phase. The microstructural analysis provides the Zr particles are dispersed uniformly in the Mg matrix and exposed to superior mechanical properties. The Mg processed with 0.5 wt% of Zr offered maximum hardness, ultimate tensile strength, and elongation percentage, which are 53, 48.8, and 43.5 % better than the values of monolithic Mg. Besides, the optimum Mg refining with 0.5 wt% Zr microstructure is detailed with EDS and conforms to the contribution of Zr. This is used for automotive
Venkatesh, R.Manivannan, S.Das, A. DanielMohanavel, VinayagamSoudagar, Manzoore Elahi Mohammad
With the advancement of lightweight magnesium-based hybrid composites, are potential for weight management applications. The liquid state stir cast process is the best way to produce complex shapes and most industries are preferred. However, the melting of magnesium alloy and achieving homogenous particle distribution are the major challenges for the conventional stir-casting process, and hot crack formation is spotted due to thermal variations. The main objectives of the present research are to enhance the microstructural and mechanical behaviour of magnesium alloy hybrid nanocomposite (AZ91E) adopted with boron carbide (B4C) and alumina (Al2O3) nanoparticles through a semisolid stir cast technique associated with inert atmosphere helps to limits the oxide formation and reduce risk of magnesium fire. The effect of composite processing and multiple reinforcements on surface morphology, tensile strength, impact strength, and hardness were thoroughly evaluated and compared. The results
Manivannan, S.Venkatesh, R.Kaliyaperumal, GopalKarthikeyan, S.Mohanavel, VinayagamSoudagar, Manzoore Elahi MohammadKarthikeyan, N.
Related to traditional engineering materials, magnesium alloy-based composites have the potential for automobile applications and exhibit superior specific mechanical behavior. This study aims to synthesize the magnesium alloy (AZ61) composite configured with 0 wt%, 4 wt%, 8 wt%, and 12 wt% of silicon nitride micron particles, developed through a two-step stir-casting process under an argon environment. The synthesized cast AZ61 alloy matrix and its alloy embedded with 4 wt%, 8 wt%, and 12 wt% of Si3N4 are subjected to an abrasive water jet drilling/machining (AJWM) process under varied input sources such as the diameter of the drill (D), transverse speed rate (v), and composition of AZ61 composite sample. Influences of AJWM input sources on metal removal rate (MRR) and surface roughness (Ra) are calculated for identifying the optimum input source factors to attain the best output responses like maximum MRR and minimum Ra via analysis of variant (ANOVA) Taguchi route with L16 design
Venkatesh, R.
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, PrabuRajamurugan, G.Agarwal, Vyomrai, Ritesh
Fly ash is a light byproduct produced when pulverized coal is burnt in suspension-fueled furnaces in power plants. Separating the recovered fly ash from the exhaust gases. Due to its distinct physical and chemical properties, it is utilized in a wide variety of industrial and building applications. These applications include the production of cement and concrete, the stabilization of liquid waste, and hydraulic mining backfill. Fly ash has the potential to enhance the physical and mechanical properties of aluminum castings, as well as reduce their costs and increase their densities, all while lowering their prices. This research investigated the effect of fly ash incorporation on the mechanical properties of the aluminum casting alloy ZA8. Investigated were the cast and heat-treated varieties of unreinforced ZA8 and its metal matrix composite of 15% ferrous, 20% nickel, 10% fly ash, and 10% magnesium carbide. According to the results, the quantity of fly ash in the melt affected the
Dinesh Krishnaa, S.Pandiyan, ManikandaprabuBen Ruben, R.Dhiyaneswaran, J.Sanjay Kumar, S.
This study focuses on enhancing the corrosion resistance of AZ91D magnesium alloy, known for its impressive strength-to-weight ratio within the magnesium group. Despite its lightweight properties, the alloy's moderate corrosion and wear resistance have restricted its widespread use. To address this limitation, we explored the application of the Dow 17 process to enable hard anodizing of AZ91D magnesium alloy. Our primary objective is to investigate the impact of hard anodizing on AZ91D magnesium alloy and its potential to mitigate corrosion issues. Hard anodizing results in the formation of a robust oxide film on the alloy's surface. We posit that this oxide film can significantly reduce substrate corrosion, expanding the alloy's utility in various applications. To substantiate our claims, we conducted a comprehensive corrosion performance analysis of AZ91D magnesium alloy, with and without hard anodizing treatment. We employed advanced techniques, including potential dynamic
Marimuthu, S.Manivannan , S.Daniel Das, A.Suresh Balaji, R.Abishek, S.Yogendra Kumar, R.
Magnesium alloys possess a unique combination of benefits stemming from their exceptional strength-to-weight ratio and reduced density. The aforementioned attributes render them notably attractive for utilization in automotive and aeronautical sectors. Furthermore, these alloys are gaining significant interest from the industry because of their outstanding dimensional stability, excellent ability to dampen vibrations, high recyclability, and good castability. They also exhibit superior stiffness, among other attributes. Nonetheless, magnesium and its alloys face several noteworthy challenges that limit their industrial utilization. These include low resistance to deformation over time, limited stability at high temperatures, restricted malleability, poor ductility, and inadequate resistance to corrosion. This study aims to investigate the phenomenon of stress corrosion cracking in magnesium alloy when exposed to potassium chromate. Addition of Ca showed better mechanical properties. A
Daniel Das, A.Suresh Balaji, R.Marimuthu, S.Manivannan, S.
Magnesium and its alloys are promising engineering materials with broad potential applications in the automotive, aerospace, and biomedical fields. These materials are prized for their lightweight properties, impressive specific strength, and biocompatibility. However, their practical use is often hindered by their low wear and corrosion resistance. Despite their excellent mechanical properties, the high strength-to-weight ratio of magnesium alloys necessitates surface protection for many applications. In this particular study, we employed the plasma spraying technique to enhance the low corrosion resistance of the AZ91D magnesium alloy. We conducted a wear analysis on nine coated samples, each with a thickness of 6mm, to assess their tribological performance. To evaluate the surface morphology and microstructure of the dual-phase treated samples, we employed scanning electron microscopy (SEM) and X-ray diffraction (XRD). The bare AZ91D magnesium alloy exhibited a microhardness value
Kishore Kanna, K.Mohamed Thariq, R.Marimuthu, S.Daniel Das, A.Suresh Balaji, R.Manivannan, S.
In Penn’s Clean Energy Conversions Lab, researcher Peter Psarras and colleagues are repurposing waste from industrial mines, storing carbon pulled from the atmosphere into newly formed rock. The team sees great environmental potential in mine tailings, the sand and sludge left behind after the sought-after ore gets removed. With samples in the lab, they’re trying to determine just how much calcium and magnesium each contains, how to best carbonate it with CO2, how and where they can store the result, and whether the process is scalable
This specification covers an aluminum alloy in the form of sheet and plate 0.006 to 3.000 inches (0.15 to 76.20 mm), inclusive, in nominal thickness (see 8.5
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate from 0.020 to 6.000 inches (0.51 to 152.40 mm), inclusive, in thickness (see 8.5
AMS D Nonferrous Alloys Committee
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
This specification covers an aluminum alloy in the form of coiled sheet 0.010 to 0.249 inch (0.25 to 6.32 mm), inclusive, in thickness, supplied in the -T4 temper (see 8.5
AMS D Nonferrous Alloys Committee
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
This specification covers an aluminum alloy in the form of sheet and plate from 0.008 to 2.000 inches (0.20 to 50.80 mm), inclusive, in thickness, supplied in the annealed (O) condition (see 8.5
AMS D Nonferrous Alloys Committee
Different weight percentages (0, 1 and 2 wt. %) of Calcium hexaboride (CaB6) is reinforced with pure magnesium and the composite is fabricated through powder metallurgy technique. The fabricated samples are used for the tribological evaluation. In this connection, the Taguchi optimization technique (L27 Orthogonal array) assisted Grey Relational analysis is used for predicting the significant factors to the tribological evaluation. The magnesium composite wear rate is evaluated by Archard’s mass loss method. Based on the obtained results, it is observed that the magnesium composite wear rate is increased by the effect of an increase in load. It was arising as a result of enhanced delamination wear mechanism which is confirmed by SEM observation on the worn-out pin surface
K, KaviyarasanParasuraman, SeenuvasaperumalAyyasamy, ElayaperumalMurphin Kumar, Paskalis Sahaya
This specification establishes the engineering requirements for producing anodic coatings on magnesium and magnesium alloys, from an alkaline electrolyte, and the properties of those coatings
AMS B Finishes Processes and Fluids Committee
Magnesium is sought to be one of the futuristic material in automotive due to its superior properties such as density, strength to weight ratio, damping characteristics and thus, making it a key enabler for light weighting. The properties of Magnesium alloys can be widely altered by change in elemental composition and heat treatment. Analysis of composition and phase morphology are driving factors for determining component’s end use properties and can be utilized effectively in its product development cycle. The as-cast AZ series alloys develop microstructure consisting of α-Mg matrix, eutectic α-Mg/γ-Mg17Al12 phase with non-uniform Al solute content in the α-Mg. Solutionising causes dissolution of Mg17Al12 brittle phase thereby increasing strength and ductility in these alloys. This paper presents analysis of AZ series automotive alloy components with focus on microstructure and mechanical properties change after solutionising. Scanning electron microscopy & energy dispersive
Manwatkar, Asmita AshokDeshmukh, Prasanna BhagwanSetia, ShivamPhale, Prasad SitakantSantosh Jambhale, Medha
This specification covers an aluminum alloy in the form of sheet 0.040 to 0.249 inch (1.02 to 6.32 mm) in nominal thickness (see 8.7
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate 0.020 to 2.000 inches (0.51 to 50.80 mm), inclusive, in nominal thickness, supplied in the annealed (-O) condition (see 8.3). When specified, product shall be supplied in the “as fabricated” (-F) temper
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate 0.020 to 4.00 inches (0.51 to 101.60 mm), inclusive, in nominal thickness (see 8.5
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate 0.008 to 4.000 inches (0.20 to 101.6 mm), inclusive, in thickness (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate with thickness from 0.008 to 4.000 inches (0.20 to 101.6 mm), inclusive, clad on two sides (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate 0.008 to 1.000 inch (0.20 to 25.40 mm), inclusive, in thickness, clad on two sides, supplied in the annealed (O) condition. When specified, product shall be supplied in the “as fabricated” (F) temper (see 8.6
AMS D Nonferrous Alloys Committee
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
This specification covers an aluminum alloy in the form of sheet and plate from 0.020 to 1.000 inch (0.51 to 25.4 mm) thick (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of plate 0.250 to 0.300 inch (6.35 to 7.62 mm), inclusive, in thickness (see 8.8
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of plate 0.500 inches (12.7 mm) to 2.250 inches (57.2 mm) in nominal thickness (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of drawn, round seamless tubing 0.500 inch (12.70 mm) and over in OD with nominal wall thickness of 0.029 to 0.500 inch (0.74 to 12.70 mm) (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate from 0.006 to 6.000 inches (0.15 to 152.40 mm), inclusive, in nominal thickness (see 8.6
AMS D Nonferrous Alloys Committee
Most of the applications of magnesium in lightweighting commercial cars and trucks are die castings rather than sheet metal, and automotive applications of magnesium sheet have typically been experimental or low-volume serial production. The overarching objective of this collaborative research project organized by the United States Automotive Materials Partnership (USAMP) was to develop new low-cost magnesium alloys, and demonstrate warm-stamping of magnesium sheet inner and outer door panels for a 2013 MY Ford Fusion at a fully accounted integrated component cost increase over conventional steel stamped components of no more than $2.50/lb. saved ($5.50/kg saved). The project demonstrated the computational design of new magnesium (Mg) alloys from atomistic levels, cast new experimental alloy ingots and explored thermomechanical rolling processes to produce thin Mg sheet of desired textures. A new commercial Mg alloy sheet material was sourced and pretreated with protective coil
Gerken, Randy T.Ghaffari, BitaSachdev, Anil K.Mehta, ManishCarter, Jon T.
Padded self-piercing riveting (P-SPR) is a newly developed multi-material joining technology to enable less ductile materials to be joined by self-piercing riveting (SPR) without cracking. A deformable and disposable pad was employed to reduce the stress distribution on the bottom surface by supporting the whole bottom sheet continuously during rivet setting process. To verify the P-SPR process, 2.0mm thick 6061-T6 wrought aluminum was joined with 3.2mm thick coated AM60B magnesium high pressure die casting (HPDC) by using 1.0mm thick dual-phase 600 (DP600) steel as the pad. Regular SPR processes with 2 different die geometries were studied as a comparison. Compared to the regular SPR processes, P-SPR demonstrated advantages on coating protection, crack mitigation and joint strength
Liu, YuchaoWang, GerryWeiler, Jonathan
This specification covers an aluminum alloy in the form of clad sheet, less than 0.250 inches (6.35 mm) thick
AMS D Nonferrous Alloys Committee
Multifunctional antimicrobial dressings were developed that feature fluorescent sensors that glow brightly under UV light if infection starts to set in and can be used to monitor the healing progress. The smart dressings harness the powerful antibacterial and antifungal properties of magnesium hydroxide
This specification covers an aluminum alloy in the form of wire (see 8.7
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of drawn seamless tubing 0.029 to 0.500 inch (0.74 to 12.70 mm) in nominal wall thickness (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate 0.020 to 0.499 inch (0.50 to 12.50 mm), inclusive, in nominal thickness, clad on two sides (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet, less than 0.250 inch (6.35 mm) thick
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate, clad on both sides, from 0.063 to 0.600 inch (1.60 to 15.24 mm), inclusive, in nominal thickness (see 8.7
AMS D Nonferrous Alloys Committee
This specification covers an aluminum alloy in the form of sheet and plate from 0.010 to 0.499 inch (0.25 to 12.67 mm), inclusive, in thickness (see 8.6
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips, and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
This specification covers a silver alloy in the form of wire, rod, sheet, strip, foil, pig, powder, shot, and chips, and a viscous mixture (paste) of powder in a suitable binder
AMS D Nonferrous Alloys Committee
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