J.T. Wang

The effect of back pressure on mechanical properties of an Mg-3 wt.% Al-1 wt.% Zn alloy with single pass equal channel angular pressing

Abstract The strength and ductility in an Mg-3 wt.% Al-1 wt.% Zn alloy were both increased after a single pass of equal channel angular pressing with back pressure (BP-ECAP). The strong soft texture in the case of ECAP without backpressure is changed to a much weak texture with some transformed to hard orientation, and together with the stronger grain refinement strengthening effect, contributes to the higher strength and ductility in samples ECAP processed with backpressure. Dynamic recrystallization and the activation of new deformation modes other than slip on the base plane during ECAP with backpressure lead to more effective grain refining and less soft texture development.

Evolution of a martensitic structure in a Cu–Al alloy during processing by high-pressure torsion

A Cu-11.8xa0wt% Al alloy was quenched in iced water from a high temperature (850xa0°C) to introduce a martensitic phase and then the alloy was processed using quasi-constrained high-pressure torsion (HPT). The micro-hardness and the microstructures of the unprocessed and severely deformed materials were investigated using a wide range of experimental techniques (X-ray diffraction, optical microscopy, scanning electron microscopy, transmission electron microscopy, and high- resolution TEM). During HPT, a stress-induced martensite–martensite transformation occurs and an

Microstructure; bonding strength and thickness ratio of Al/Mg/Al alloy laminated composites prepared by hot rolling

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Controllable bimodal structures in hypo-eutectoid Cu–Al alloy for both high strength and tensile ductility

martensite phase is formed. In the deformed material, there are nanoscale deformation bands having high densities of defects and twins in the

Mechanical properties of an Al/Mg/Al trilaminated composite fabricated by hot rolling

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Effect of equal channel angular pressing on the thermal-annealing-induced microstructure and texture evolution of cold-rolled copper

martensite. It was observed that a high density of dislocations became pinned and accumulated in the vicinity of twin boundaries, thereby demonstrating a strong interaction between twin boundaries and dislocations during the HPT process.