辐照
合金
材料科学
空隙(复合材料)
晶界
肿胀 的
高熵合金
硬化(计算)
粒度
冶金
复合材料
化学工程
微观结构
核物理学
工程类
图层(电子)
物理
作者
Chenyang Lu,Ming-Yang Li,Pengyuan Xiu,Xing Wang,Gihan Velisa,Li Jun Jiang,Karren L. More,Jonathan D. Poplawsky,Yongqin Chang,Yanwen Zhang,Lumin Wang
标识
DOI:10.1016/j.jnucmat.2021.153316
摘要
The present paper reports the irradiation behavior of nanostructured NiCoCr medium entropy alloy enhanced by Y-Hf-O nanooxides and fine grains produced by powder metallurgy . Ion beam irradiation to a peak dose of 130 dpa at 580°C produced neither detectable void swelling nor irradiation-induced hardening, in contrast to significant void swelling and property degradation of single phase NiCoCr concentrated solid-solution alloy under the similar irradiation condition. The dispersed nanooxides and high density of grain boundaries act as defect sinks that effectively annihilate irradiation-induced interstitials and vacancies. Furthermore, high-density nanooxides maintain their crystalline structures and stabilize the grain boundaries during irradiation.
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