Microstructural Stability of a Multiphase Ni-25Al-15Cr (at. pct) Intermetallic Alloy

作     者：Chen, Rongshi Guo, Jianting Zhou, Jiyang 

作者机构：Chinese Acad Sci Inst Met Res Dept Superalloys Shenyang 110015 Peoples R China Dalian Univ Technol Dept Mat Engn Dalian 116023 Peoples R China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1999年第15卷第2期

页      面：133-136页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Nickel alloys 

摘      要：The microstructure of multiphase Ni-25Al-15Cr (at. pct) intermetallic alloy consists of dendritic arms ( beta -NiAl phase) and interdendritic regions ( gamma / gamma two phases) under homogenization followed by air cooling condition. Furnace cooling following homogenization does not significantly influence its microstructure. However, the effects of aging treatment on the microstructure strongly depend on cooling rates following homogenization. A single phase gamma layer with a alpha Cr spouse layer was observed surrounding the dendritic arms, the formation of this couple is attributed to a four-phase invariant quasi-peritectoid. (Edited author abstract) 16 Refs.