...Dongsheng Li; Curt Lavender Improving yield strength and asymmetry is critical to expand applications of magnesium alloys in industry for higher fuel efficiency and lower CO 2 production. Grain refinement is an efficient method for strengthening low symmetry magnesium alloys, achievable...

... cracks grain size magnesium alloys nucleation damage crack aluminium bimodal grain size ultrafine grain Nanocrystalline metals with grain sizes in the range of 10–500 nm have been synthesized in an attempt to improve the strength of these materials, according to the traditional Hall...

....2009.12.011 Su , P. , Gerlich , A. , and North , T. H. , 2005 ,“ Friction Stir Spot Welding of Aluminum and Magnesium Alloy Sheets ,” Society of Automotive Engineers, Warrendale, PA, SAE Technical Paper No. 2005-01-1255. Gerlich , A. , Su , P. , and North , T. H. , 2005...

... MPa for internal pressurization, and 300 ° C for forming temperature. Using this testing machine, experiments of T-shape protrusion of magnesium alloy AZ61 tubes at elevated temperatures are carried out. A commercial finite element code DEFORM 3D is used to simulate the plastic deformation of the tube...

... magnesium alloys manganese alloys mechanical strength porosity rheology segregation silicon alloys titanium alloys zinc alloys 01 08 2008 02 02 2009 12 03 2010 12 03 2010 2010 American Society of Mechanical Engineers ...

... strain fields during fracture in a tensile specimen with DIC grids positioned in the failure region. 13 01 2009 24 07 2009 17 02 2010 17 02 2010 automobile industry automotive components automotive materials finite element analysis fracture grain size magnesium alloys...

... magnesium alloys nucleation percolation porosity sheet materials silicon alloys tensile testing voids (solid) X-ray microscopy 19 07 2007 17 11 2008 06 03 2009 Nucleated voids and cracks at 0.805 mm specimen elongation (0.405 maximum plastic strain). First event...

...Benoît Beausir; László S. Tóth; Fathallah Qods; Kenneth W. Neale Torsion experiments were carried out on pure magnesium (99.9%) and the magnesium alloy AZ71 under free-end conditions of testing. The alloy had an axisymmetric initial texture, while the pure Mg samples were prepared from a rolled...

... copper alloys cracks magnesium alloys plastic flow point defects slip thermomechanical treatment voids (solid) X-ray scattering aluminum Guinier radius nanovoids quenching SAXS strain rate sensitivity thermally activated deformation Plastic flow in crystalline solids is made...

... computerised tomography flaw detection magnesium alloys nucleation slip superplasticity voids (solid) superplasticity damage nucleation coalescence X-ray tomography Superplasticity is the ability for a given material to exhibit particularly large elongations to fracture for appropriate...

...Sp. G. Pantelakis; N. D. Alexopoulos; A. N. Chamos The potential of cast magnesium alloys for being used as structural materials in lightweight applications is assessed. The ability of the alloys for mechanical performance is evaluated and compared against the ability of widely used structural...

...Rimma Lapovok; Peter D. Hodgson Despite the high demand for industrial applications of magnesium, the forming technology for wrought magnesium alloys is not fully developed due to the limited ductility and high sensitivity to the processing parameters. The processing window for magnesium alloys...

... aluminum-magnesium alloy AA5052-H32 sheet with major alloying elements of 2.5 wt. % Mg and 0.25 wt. % Cr ( 13 ). The as-received polycrystalline sheet had the strain-hardened and stabilized H32 temper and was not strongly textured. It had a thickness of 0.95 mm...

...L. Zhu; A. J. Beaudoin; S. R. MacEwen Time-dependent relaxation processes continue after forming of sheet metal components. Mechanical properties and even the shape of the part may evolve with time. Beverage can ends, made of an aluminum-magnesium alloy, provide one example of relaxation in a metal...

... 2003 22 01 2004 aluminium alloys magnesium alloys silicon alloys interface structure laser beam welding optical microscopy atomic force microscopy indentation microhardness dendritic structure tensile strength ductility grain boundaries melting The advent of tailor...

... of material, which was subsequently going to be removed by the machining operation. machining silicon compounds particle reinforced composites aluminium alloys copper alloys magnesium alloys iron alloys nickel alloys abrasion laser hardening scanning electron microscopy 10 January...

...M. A. Sutton,; A. P. Reynolds,; D.-Q. Wang, and; C. R. Hubbard 30 09 2002 aluminium alloys magnesium alloys welding internal stresses neutron diffraction recrystallisation Figure 2 on p. 216 of the article does not have the correct dimensions for the Arcan test specimens...

... August 22, 2001. Associate Editor: G. Newaz. 09 01 2001 22 08 2001 26 03 2002 aluminium alloys finite element analysis internal stresses cold working fatigue cracks recovery copper alloys magnesium alloys zinc alloys Cold Expansion Process Residual Stress Finite...

... in the rolling direction comprise the parent material. Typical joint strength for 2024-T3 FSW’s is in the range of 80–85 percent of the base metal. aluminium alloys copper alloys magnesium alloys welding internal stresses neutron diffraction recrystallisation 23 03 2001...

...E. S. Puchi Cabrera A constitutive description of the deformation of commercial aluminum-1% magnesium alloy (AA5005) under hot working conditions has been formulated on a rational basis. The strain dependence of the flow stress is described by means of the evolution law earlier advanced by Sah et...