Surface orientation dependence of irradiation-induced hardening in a polycrystalline zirconium alloy
Surface orientation dependence of irradiation-induced hardening in a polycrystalline zirconium alloy
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DOI：
10.1016/j.scriptamat.2018.11.029
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发表时间：
2019-03
影响因子：
6
通讯作者：
Huilong Yang;S. Kano;J. McGrady;Jingjie Shen;Y. Matsukawa;Dongyue Chen;Kenta Murakami;H. Abe
中科院分区：
文献类型：
--
作者：
Huilong Yang;S. Kano;J. McGrady;Jingjie Shen;Y. Matsukawa;Dongyue Chen;Kenta Murakami;H. Abe
采用离子加速器辐照、纳米压痕试验和电子背散射衍射分析相结合的方法研究了Zr合金辐照硬化的晶向依赖性。[0001]取向的纳米硬度最高，当取向从[0001]轴偏离到[10 1 <$0]和2 1 <$1 <$0轴时，纳米硬度逐渐降低，与辐照剂量无关。晶体取向依赖的辐照诱导硬化得到进一步证实。在[0001]取向处观察到最低的硬化，并且硬化效应朝向[10 1 <$0]和[2 1 <$1 <$0]取向增强，在相对于[0001]旋转约55°时达到最大。
A combination of ion-accelerator irradiation, nanoindentation tests, and electron backscatter diffraction analysis was utilized to probe the crystal orientation dependence of irradiation-induced hardening in a Zr alloy. The nanohardness at the [0001] orientation exhibited the highest value, which gradually decreased when the orientation deviated from the [0001] axis to the [10 1¯ 0] and 2 1¯ 1¯ 0 axes, regardless of the irradiation dose. Crystal-orientation-dependent irradiation-induced hardening is further confirmed. The lowest hardening was observed at [0001] orientation, and the hardening effect intensified toward the [10 1¯ 0] and [2 1¯ 1¯ 0] orientations, reaching the maximum at a rotation angle of~ 55° with respect to [0001].