采用电子束辐照及电子束-氦离子束(He*)复合辐照方式,研究低活性Fe-Cr-Mn奥氏体钢时效析出碳化物的辐照损伤行为.结果表明:空洞可以在碳化物内部及边界处形成,而边界是优先形成位置;溶质元素在碳化物边界产生偏析;碳化物与γ相界面可以发生移动.从点缺陷与溶质元素相互作用和He的协同相助效应,讨论了时效碳化物辐照损伤的原因,提出相界面的局部移动也是辐照损伤的一种表现形式.
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