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The effect of continuous confined strip shearing deformation on the mechanical properties of AZ31 magnesium alloys
Materials Science and Engineering: A ( IF 6.1 ) Pub Date : 2018-11-16 , DOI: 10.1016/j.msea.2018.11.069
Jinhua Peng , Zhen Zhang , Pengju Yang , Yaozu Li , Peng Guo , Wei Zhou , Yucheng Wu

Continuous confined strip shearing deformation (CCSS) was conducted on AZ31 magnesium alloys. The microstructure and texture were modified and special inclined basal texture was obtained through different routes. The newly formed basal texture was favor for the basal slip which brought about lower micro-hardness and yield strength but higher elongation. The strong tensile-compression asymmetry in the base material was weakened because basal slip was the dominating deformation mechanism both in tensile and compression tests. Meanwhile, {10-12} twinning was suppressed because of easier activation of basal slip. The strain hardening behavior was also changed and the strain hardening rate almost decreased along the whole deformation process; and only a slight increase was found at the stage2 of route A in tensile test. The strain hardening exponents were scattered from different stages due to the specific deformation mechanism at each stage.



中文翻译:

连续约束带钢剪切变形对AZ31镁合金力学性能的影响

在AZ31镁合金上进行了连续的带状剪切变形(CCSS)。改变了组织和结构,并通过不同的途径获得了特殊的倾斜基础纹理。新形成的基底纹理有利于基底滑移,带来较低的显微硬度和屈服强度,但延伸率较高。在拉伸和压缩试验中,基底滑移是主要的变形机理,从而削弱了基材中强烈的拉伸-压缩不对称性。同时,{10-12}孪晶被抑制,因为基底滑移更容易激活。在整个变形过程中,应变硬化行为也发生了变化,应变硬化率几乎降低了。在拉伸试验中,路线A的阶段2仅发现了少量增加。

更新日期:2018-11-16
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