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首页> 外文期刊>Scripta materialia >Effect of twinning on the flow behavior during strain path reversals in two Mg (+Al, Zn, Mn) alloys
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Effect of twinning on the flow behavior during strain path reversals in two Mg (+Al, Zn, Mn) alloys

机译：孪生对两种Mg（+ Al，Zn，Mn）合金在应变路径反转过程中流动行为的影响

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摘要

Strain path change tests (uniaxial tension followed by compression) were employed to investigate the effect of the twins formed during extension on the subsequent compression behavior. Higher yield stresses were observed during compression after prior extension than when no prestraining was used. This contrasts sharply with the equivalent behavior reported in the literature when compression precedes extension. The peak strain in compression was increased by tensile prestraining and it was noted that the presence of twins has a greater influence on the compression flow stress than the grain size.
机译：应变路径变化测试（单轴拉伸然后压缩）用于研究拉伸过程中形成的孪晶对随后压缩行为的影响。与不使用预应变相比，在事先拉伸后的压缩过程中观察到更高的屈服应力。当压缩先于扩展时，这与文献中报道的等效行为形成鲜明对比。压缩时的峰值应变通过拉伸预应变而增加，并且注意到孪晶的存在对压缩流动应力的影响大于晶粒尺寸。

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