Abstract Mobile grain boundaries (GB) may have specific interactions with radiation-induced defects compared with static GBs. In this paper, we consider the GB-defect interactions for the {1 1 2} GB that performs shear coupled grain boundary migration mediated by its glissile disconnections. The conservative motion of this GB facilitates the interaction with radiation-induced defects both, mobile and sessile. While mobile defects interact by diffusing to GBs, sessile defects are approached by moving GBs. Clusters at the GB may either be dragged by disconnections or transformed by the motion of the GB that relocates them into the adjacent grain. In turn, the interaction with point defects and their clusters increases the resolved shear stress necessary for the motion of disconnections and subsequent GB migration. The results obtained are directly applicable to the interaction of radiation induced defects with {1 1 2} deformation twins.

中文翻译：

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移动{1 1 2}晶界与α-Fe中辐射诱导缺陷的相互作用：缺陷的转变和对剪切耦合晶界迁移的影响

摘要 与静态 GB 相比，移动晶界 (GB) 可能与辐射诱导缺陷具有特定的相互作用。在本文中，我们考虑了 {1 1 2} GB 的 GB 缺陷相互作用，它执行由其滑动断开介导的剪切耦合晶界迁移。这个 GB 的保守运动促进了与辐射引起的缺陷的相互作用，移动的和固着的。虽然移动缺陷通过扩散到 GB 来相互作用，但通过移动 GB 来接近固着缺陷。GB 上的簇可能会被断开连接拖拽，也可能会被 GB 的运动转换，从而将它们重新定位到相邻的纹理中。反过来，与点缺陷及其簇的相互作用增加了断开运动和随后的 GB 迁移所需的解析剪应力。