Abstract We investigate the onset of detwinning in magnesium alloy Mg-3Al-1Zn under continuous loading with real-time in situ synchrotron X-ray diffraction. Detwinning of the { 10 1 ¯ 2 } extension twins activated both by tension parallel to and compression perpendicular to the c-axis fibers is explored. The experimental results reveal that detwinning of the { 10 1 ¯ 2 } extension twins occurs immediately upon unloading, regardless of whether the twins are activated by tension parallel to or compression perpendicular to the c-axis fibers.

中文翻译：

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Mg-3Al-1Zn 合金开始解结：基于同步加速器的 X 射线衍射研究

摘要 我们通过实时原位同步加速器 X 射线衍射研究了连续加载下镁合金 Mg-3Al-1Zn 中去孪晶的发生。探索了由平行于 c 轴纤维的拉伸和垂直于 c 轴纤维的压缩激活的 { 10 1 ¯ 2 } 延伸孪晶的解孪。实验结果表明，{10 1 ¯ 2 } 拉伸孪晶在卸载时立即发生解孪，无论孪晶是由平行于 c 轴纤维的拉伸还是垂直于 c 轴纤维的压缩激活。