The twin–twin interaction phenomenon in Ti is studied by incorporating experimental observation and theoretical analysis. Secondary $$ \{ {10\bar{1}2} \} $$ { 10 1 ¯ 2 } twins are stimulated in primary $$ \{ {11\bar{2}2} \} $$ { 11 2 ¯ 2 } and $$ \{ {11\bar{2}4} \} $$ { 11 2 ¯ 4 } via twinning dislocation dissociation. Primary twin variants are found either share the same $$ \langle {10\bar{1}0} \rangle $$ ⟨ 10 1 ¯ 0 ⟩ zone axis or with different zone axes. Schmid law, dislocation theory and crystallographic analysis are used to investigate the formation processes and physical mechanisms of the twin–twin interaction phenomenon. Results show that non-Schmid secondary twins are stimulated under the effect of primary twinning interactions. Besides to secondary twinning dislocations, glissile and sessile dislocations generate as a result of primary dislocation dissociation. Glissile dislocation glide on the easy slip prismatic plane, while sessile dislocation accumulates and leads to the increase of local strain.

中文翻译：

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位错解离导致钛中的二次孪晶

通过结合实验观察和理论分析，研究了 Ti 中的孪晶相互作用现象。二级 $$ \{ {10\bar{1}2} \} $$ { 10 1 ¯ 2 } 双胞胎在初级 $$ \{ {11\bar{2}2} \} $$ { 11 2 ¯ 2 } 和 $$ \{ {11\bar{2}4} \} $$ { 11 2¯ 4 } 通过孪生位错解离。发现主要的孪生变体要么共享相同的 $$ \langle {10\bar{1}0} \rangle $$ ⟨ 10 1 ¯ 0 ⟩ 区域轴或具有不同的区域轴。施密德定律、位错理论和晶体学分析被用来研究孪生相互作用现象的形成过程和物理机制。结果表明，在初级孪生相互作用的影响下，非施密德次级双胞胎受到刺激。除了二次孪晶位错，滑动和固着位错是初级位错解离的结果。滑动位错在易滑棱柱面上滑动，而固位错积累导致局部应变增加。