摘要
电子束辐照结果表明:添加大尺寸溶质原子W、V的FeCrMn合金,由于形成大量微细碳化物,使得合金基体中尾闾数目增加,能有效降低合金基体中点缺陷过饱和浓度,减少空洞肿胀。同时有利于形成高密度位错环,减少它们相互间的间距,缩短点缺陷向尾闾移动扩散的平均自由程,导致点缺陷捕获溶质原子的机会减少,进而抑制辐照诱起晶界偏析。
Results of electron irradiation indicated that as
oversized solutes W、V were added to a Fe Cr Mn alloy, a large amount of fine Carbides was
formed, the quantity of sinks in matrix increased, and the supersaturated concentration of point
defects and void swelling reduced effectively. It was also found that such an addition was
appreciated for forming of high density dislocation loops with shortened distance between them,
decreasing the average diffusion free path of the point defects migration to sinks, reducing the
possibility of point defects to capture solute atoms, and retarding the induced segregation on
grain boundary.
出处
《核科学与工程》
CSCD
北大核心
1997年第2期143-149,共7页
Nuclear Science and Engineering