Origin of the Anomalous {10(1)over-bar2} Twinning during Tensile Deformation of Mg Alloy Sheet
Origin of the Anomalous {10(1)over-bar2} Twinning during Tensile Deformation of Mg Alloy Sheet
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DOI：
10.2320/matertrans.mra2008283
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发表时间：
2008-12-01
影响因子：
1.2
通讯作者：
Ando, D.
中科院分区：
文献类型：
--
作者：
Koike, J.;Sato, Y.;Ando, D.
为了了解{10(1) over bar2}型异常孪晶的起源，AZ31镁合金轧制板材在室温下沿轧制方向受拉变形。在{10(1)over bar2}孪晶倾向和基底位错滑移活动之间发现了极好的相关性。应变张量的计算表明，与局部基底滑移相关的对角应变分量可以通过{10 (1) over bar2}孪晶完全抵消。结果得出结论，形成了异常的{10(1) over bar2}孪晶，以适应局部基底位错滑移引起的应变不相容性。 [doi: 10.2320/matertrans.MRA2008283]
In order to understand the origin of the anomalous twinning of the {10 (1) over bar2} type, rolled sheets of AZ31 Mg alloy were deformed at room temperature in tension along the rolling direction. An excellent correlation was found between {10 (1) over bar2} twinning tendency and basal dislocation slip activity. Calculation of strain tensor indicated that the diagonal strain components associated with the localized basal slip can be canceled completely by the {10 (1) over bar2} twinning. The results led to the conclusion that anomalous {10 (1) over bar2} twins were formed to accommodate the strain incompatibility caused by localized basal dislocation slip. [doi: 10.2320/matertrans.MRA2008283]