摘要
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．
Electron beam and dual-beam （electron-hilum ion） irradiation damage characteristics of carbide in Fe-Cr-Mn steel treated by long term aging treatment were in situ investigated. The results indicate that the voids were form inside carbide and along interface of carbide/γ-matrix. The interface migration and segregation of Cr, Mn, W and V at the interface are observed. The phase stability and reason of the irradiation damage of precipitated carbide are discussed with the interaction between point defects and solute elements and radiation-induced synergistic effect of hilum. The interface migration also is a form of irradiation damage.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期234-238,共5页
Acta Metallurgica Sinica
