摘要
偏聚到晶界的镁原子可将原子错配度较小的其它溶质原子从晶界驱逐到晶内点阵或晶界相中 ,并可增强间隙原子向晶界的偏聚 ;镁原子可进入晶界相的单胞中 ,从而促使晶界相球化 ,并降低其稳定性。
The Mg atoms segregated at grain boundaries may promote the solute atoms with smaller misfits getting into either the lattice inside grain or the precipitate phase in grain boundaries and may enhance the interstitial atoms segregation accumulating towards grain boundaries. The Mg atoms can enter the lattice of grain boundary precipitates, resulting in spheroidizing the precipitates and decreasing their stability.
出处
《特殊钢》
EI
北大核心
2000年第2期8-12,共5页
Special Steel
关键词
镁
晶界效应
作用机制
高温合金
Mg, Grain Boundary Influence, Effect Mechanism
