Abstract We report a map of irradiation-induced recrystallization and polygonization in a CrFeCoNiCu high-entropy alloy obtained by a precession electron diffraction technique. This orientation map enables the visualization of depth-dependent recrystallization at a glance and reveals the effects of irradiation dose and material entropy. Discontinuous dynamic recrystallization preferentially occurs near the surface, where the irradiation dose is low, but radiation-enhanced diffusion dominantly occurs leading to dislocation climb even at room temperature. Interestingly, in the high-entropy phase with a relatively low stacking fault energy, discontinuous dynamic recrystallizastion is suppressed due to the lower stored energy and grain boundary diffusivity compared low-entropy one.

中文翻译：

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CrFeCoNiCu高熵合金中抑制辐射诱导的动态再结晶

摘要 我们报告了通过旋进电子衍射技术获得的 CrFeCoNiCu 高熵合金的辐照诱导再结晶和多边形化图。该方向图可以一目了然地可视化依赖于深度的再结晶，并揭示辐射剂量和材料熵的影响。不连续动态再结晶优先发生在辐射剂量低的表面附近，但主要发生辐射增强扩散，即使在室温下也会导致位错爬升。有趣的是，在堆垛层错能相对较低的高熵相中，与低熵相相比，由于较低的储存能量和晶界扩散率，不连续动态再结晶受到抑制。