The Experts below are selected from a list of 2670 Experts worldwide ranked by ideXlab platform
Jianguo Lin - One of the best experts on this subject based on the ideXlab platform.
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solution heat treatment forming and in die quenching of a commercial Sheet Magnesium alloy into a complex shaped component experimentation and fe simulation
Key Engineering Materials, 2014Co-Authors: Omer El Fakir, Liliang Wang, Sanjeev Das, Ian Stone, Geoff Scamans, Z Fan, Daniel S Balint, John P Dear, Jianguo LinAbstract:Interest in lightweight materials, particularly Magnesium alloys, has increased significantly with rising efficiency requirements in the automotive sector. Magnesium is the lightest available structural metal, with a density approximately 35% lower than that of aluminium. The potential is great for Magnesium to become a primary material used in future low carbon vehicle structures; however, there are significant obstacles, namely low ductility and formability, particularly at room temperature. The aim of this work is to present the feasibility of using the solution Heat treatment, Forming, and in-die Quenching (HFQ) process to produce complex shapes from a Sheet Magnesium alloy, and to use the results to verify a simulation of the process developed using commercial FE software. Uniaxial tensile tests were initially conducted to establish the optimum parameters for forming the part. Stamping trials were then carried out using these parameters, and a simulation set up modelling the forming operation. It was shown that the HFQ process could be used to form a successful component from this alloy, and that a good match was achieved between the results of the forming experiments and the simulation.
T. Kuwabara - One of the best experts on this subject based on the ideXlab platform.
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Mechanical Testing of Thin Sheet Magnesium Alloys in Biaxial Tension and Uniaxial Compression
Experimental Mechanics, 2014Co-Authors: D. Steglich, X. Tian, J. Bohlen, T. KuwabaraAbstract:Tension and compression experiments on Magnesium rolled Sheets and extruded products of AZ31 (Mg + 3%Al + 1%Zn) and ZE10 (Mg + 1%Zn + 0.3%Ce based misc metal) were performed at room temperature. The tests were conducted along the longitudinal and the transverse direction to quantify the in-plane anisotropy. Samples built from adhesively-bonded layers of Sheets were used for in-plane as well as through-thickness compression testing. It was verified that this simple testing method leads to identical results as using comb-like dies and equi-biaxial bulge testing, respectively. In the case of uniaxial loading, the longitudinal and transverse strain components were measured using independent extensometers. R -values were calculated from these signals. The mechanical responses were correlated to the microstructure and the texture. The recorded differences between tensile and compressive response reveal the strength differential effect of the materials. The distortional character of the plastic behaviour is evidenced through their responses to equi-biaxial tensile loading. Significant differences in the compressive responses of the two alloys were identified by comparing the respective hardening rates.
Kazuhiko Yamasaki - One of the best experts on this subject based on the ideXlab platform.
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the characteristics of laser welded Magnesium alloy using silver nanoparticles as insert material
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2012Co-Authors: M Ishak, Katsuhiro Maekawa, Kazuhiko YamasakiAbstract:This paper describes the characteristics of the laser welding of thin-Sheet Magnesium alloys using silver (Ag) nanoparticles as an insert material. The experiment was conducted using nanoparticles with 5 nm and 100 nm diameters that were welded with a Nd:YAG laser. The microstructure and mechanical properties of the specimens welded using inserts with different sizes of nanoparticles and without an insert material, were examined. Electron probe micro-analyzer (EPMA) analysis was conducted to confirm the existence of Ag in the welded area. The introduction of the Ag nanoparticle insert promoted large area of fine grain and broadened the acceptable range of scanning speed parameters compared to welds without an insert. Welds with 5 nm nanoparticles yielded the highest fracture load of up to 818 N while the lowest fracture load was found for weld specimens with 100 nm nanoparticles. This lower fracture load was due to larger voids and a smaller throat length, which contributed to a lower fracture load when using larger nanoparticles.
Mark A Gibson - One of the best experts on this subject based on the ideXlab platform.
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current wrought Magnesium alloys strengths and weaknesses
JOM, 2005Co-Authors: Colleen Joyce Bettles, Mark A GibsonAbstract:The opportunities for extruded and Sheet Magnesium products in the automotive industry, in particular, are increasing as the quest for lightweighting gains momentum. However, the current alloys all have limitations and these are accentuated when higher productivity targets are also imposed. This article attempts to summarize the strengths and weaknesses of the current wrought alloys, with particular emphasis on the extrusion process, and also considers alternative processing routes which may be useful in overcoming some of these shortcomings.
Omer El Fakir - One of the best experts on this subject based on the ideXlab platform.
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solution heat treatment forming and in die quenching of a commercial Sheet Magnesium alloy into a complex shaped component experimentation and fe simulation
Key Engineering Materials, 2014Co-Authors: Omer El Fakir, Liliang Wang, Sanjeev Das, Ian Stone, Geoff Scamans, Z Fan, Daniel S Balint, John P Dear, Jianguo LinAbstract:Interest in lightweight materials, particularly Magnesium alloys, has increased significantly with rising efficiency requirements in the automotive sector. Magnesium is the lightest available structural metal, with a density approximately 35% lower than that of aluminium. The potential is great for Magnesium to become a primary material used in future low carbon vehicle structures; however, there are significant obstacles, namely low ductility and formability, particularly at room temperature. The aim of this work is to present the feasibility of using the solution Heat treatment, Forming, and in-die Quenching (HFQ) process to produce complex shapes from a Sheet Magnesium alloy, and to use the results to verify a simulation of the process developed using commercial FE software. Uniaxial tensile tests were initially conducted to establish the optimum parameters for forming the part. Stamping trials were then carried out using these parameters, and a simulation set up modelling the forming operation. It was shown that the HFQ process could be used to form a successful component from this alloy, and that a good match was achieved between the results of the forming experiments and the simulation.