To overcome the difficult deformation of common Mg alloys, the Mg-5Li-1Al (wt %) alloy sheet with good strength-ductility balance has been successfully fabricated by two-pass extrusion at 280 °C. The microstructural evolution, texture, mechanical properties and stretch formability of the extruded sheets have been investigated. The results show that a refined microstructure can be obtained by two-pass extrusion due to dynamic recrystallization (DRX). The extruded sheet exhibits excellent formability with elongation to failure (FE) of 34% and Erichsen value of 4.82. The superior mechanical properties have been owing to both ultrafine DRX grains and weaken basal texture resulted from lithium addition.

中文翻译：

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两遍挤压Mg-5Li-1Al板材的组织，织构和力学性能

为了克服普通Mg合金的困难变形，已经通过在280℃下两次通过挤压成功地制造了具有良好的强度-延展性平衡的Mg-5Li-1Al（wt％）合金板。已经研究了挤出片材的微观结构演变，织构，机械性能和拉伸成形性。结果表明，由于动态重结晶（DRX），可通过两次通过挤出获得精细的组织。挤出的片材表现出优异的成型性，断裂伸长率（FE）为34％，埃里克森值为4.82。优异的机械性能归因于超细的DRX晶粒和因添加锂而导致的基础纹理减弱。