Evolution of the spread of crystal orientation with plastic deformation in a cold-rolled Cu single crystal
Evolution of the spread of crystal orientation with plastic deformation in a cold-rolled Cu single crystal
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DOI：
10.1007/s10853-013-7888-2
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发表时间：
2014-03-01
影响因子：
4.5
通讯作者：
Onaka, Susumu
中科院分区：
文献类型：
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作者：
Yoshida, Akari;Miyajima, Yoji;Onaka, Susumu
使用扫描电子显微镜，我们研究了具有 {15 12 9}aOE (c) 9 10 3 > 取向的 Cu 单晶的微观结构是如何从冷轧演变而来的。第一个 50% 轧制导致其晶体取向旋转至 {211}aOE (c) 111 >。尽管取向分裂发生在单晶表面附近，但在第四次50%轧制后仍然存在近{211}aOE(c)111>取向的带状区域。我们测量了近{211}aOE (c) 111 > 区域中晶体取向的扩展，作为所有轧制步骤引起的总塑性等效应变的函数。当50%轧制次数少于两次时，晶体取向的扩展与塑性等效应变的平方根成正比。根据我们的结果，我们讨论了晶体取向的扩展与轧制产生的塑性等效应变之间的关系。
Using scanning electron microscopy, we investigated how the microstructure of a Cu single crystal with a {15 12 9}aOE (c) 9 10 3 > orientation evolved from cold rolling. The first 50 % rolling caused its crystal orientation to rotate to {211}aOE (c) 111 >. Although orientation splitting occurred near the surface of the single crystal, band-like regions with near-{211}aOE (c) 111 > orientations were still present after the fourth 50 % rolling. We measured the spread of crystal orientation in the near-{211}aOE (c) 111 > regions as a function of the total plastic equivalent strain induced by all rolling steps. When 50 % rolling was performed less than twice, the spread of crystal orientation was proportional to the square root of the plastic equivalent strain. Based on our results, we discussed the relationship between the spread of crystal orientation and the plastic equivalent strain generated by rolling.