A novel repetitive continuous welding extrusion for refining grain size and evading strength-ductility trade-off in AZ31 magnesium alloy

A novel repetitive continuous welding extrusion process was proposed to optimize the microstructure and mechanical properties of A231 magnesium alloy. Both strength and elongation were improved simultaneously after two passes extrusion processing owing to the effective grain refinement and basal texture modification by introducing additive severe shear deformation.

提出了一种新型重复连续焊接挤压工艺，以优化A231镁合金的微观结构和力学性能。经过两道次挤压加工后，由于引入附加剧烈剪切变形实现了有效的晶粒细化和基面织构改变，强度和伸长率同时得到提高。