高Fe、Cr含量多相Ni3Al基高温合金组织与性能研究进展
吴静,刘永长(
),李冲,伍宇婷,夏兴川,李会军
),李冲,伍宇婷,夏兴川,李会军
Recent Progress of Microstructure Evolution and Performance of Multiphase Ni3Al-Based Intermetallic Alloy with High Fe and Cr Contents
WU Jing,LIU Yongchang(),LI Chong,WU Yuting,XIA Xingchuan,LI Huijun
),LI Chong,WU Yuting,XIA Xingchuan,LI Huijun
图3. 多相Ni3Al基高温合金凝固过程中主要相析出顺序示意图
Fig.3. Schematics of the separating sequence of the main precipitates during solidification of a multiphase Ni3Al-based intermetallic alloy(a) first generation of γ dendrite (γD) from liquidoid of alloy(b) subsequent transformation of interdendritic β in residual liquidoid and precipitation of rod-like Cr3C2 carbides in interdendritic β(c) formation of γ'-envelope in the residual liquidoid around β(d) precipitations of cuboidal primary γ' phase (γ'I) in the γ dendrite and acicular γ' phase in the interdendritic β(e) precipitations of ultrafine secondary γ' phase (γ'II) in the γ-channels and spherical α-Cr particles in the interdendritic β
