Abstract Very unusual and interesting interaction between matrix prismatic dislocations and { 10 1 ¯ 1 } twin boundaries (TBs) in Magnesium (Mg) was observed in atomistic simulations. When the first prismatic dislocation impinged on the TB, the incoming dislocation was transmuted into a thin layer of { 11 2 ¯ 1 } twin inside the { 10 1 ¯ 1 } twin. When successive prismatic dislocations on the same slip plane impinged on the same location at the { 10 1 ¯ 1 } TB, the { 11 2 ¯ 1 } twin kept growing toward the opposite { 10 1 ¯ 1 } TB. Eventually, the { 11 2 ¯ 1 } twin reached the opposite TB and was then transmuted back to prismatic dislocations that exited the { 10 1 ¯ 1 } twin and glided into the matrix. Hence, the matrix prismatic dislocations temporarily lose their dislocation identity during twin-slip interaction and then resume their dislocation identity after the interaction is complete. The net effect of these interactions is that the matrix prismatic dislocations transmit across the { 10 1 ¯ 1 } twin. Lattice correspondence analysis for { 10 1 ¯ 1 } twinning was performed to understand the mechanism of the interactions. The results show that, the prismatic slip plane is exactly the corresponding plane of { 11 2 ¯ 1 } twinning. Such a correspondence is consistent with the crystallographic calculations based on classical twinning theory.

中文翻译：

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镁中棱柱滑移和{101¯1}孪晶相互作用过程中的位错↔孪晶嬗变

摘要 在原子模拟中观察到基体棱柱位错和镁 (Mg) 中的 { 10 1 ¯ 1 } 孪晶界 (TBs) 之间非常不寻常和有趣的相互作用。当第一个棱柱位错撞击到 TB 时，传入的位错在 { 10 1 ¯ 1 } 孪晶内部转变为薄薄的 { 11 2 ¯ 1 } 孪晶层。当同一滑移面上的连续棱柱位错撞击到 { 10 1 ¯ 1 } TB 的同一位置时，{ 11 2 ¯ 1 } 孪晶继续向相反的 { 10 1 ¯ 1 } TB 生长。最终，{ 11 2 ¯ 1 } 孪晶到达相反的 TB，然后转变回棱柱位错，从 { 10 1 ¯ 1 } 孪晶出来并滑入矩阵。因此，矩阵棱柱位错在双滑相互作用期间暂时失去其位错身份，然后在相互作用完成后恢复其位错身份。这些相互作用的净效应是矩阵棱柱位错穿过 { 10 1 ¯ 1 } 孪晶传递。对 { 10 1 ¯ 1 } 孪晶进行晶格对应分析以了解相互作用的机制。结果表明，棱柱滑移面正是{ 11 2 ¯ 1 }孪晶的对应面。这种对应与基于经典孪晶理论的晶体学计算是一致的。对 { 10 1 ¯ 1 } 孪晶进行晶格对应分析以了解相互作用的机制。结果表明，棱柱滑移面正是{ 11 2 ¯ 1 }孪晶的对应面。这种对应与基于经典孪晶理论的晶体学计算是一致的。对 { 10 1 ¯ 1 } 孪晶进行晶格对应分析以了解相互作用的机制。结果表明，棱柱滑移面正是{ 11 2 ¯ 1 }孪晶的对应面。这种对应与基于经典孪晶理论的晶体学计算是一致的。