Effect of 0.1 wt pct Dy Addition on Morphology and Compressive Behavior of Cast ***-0.2Hf

作     者：Qiang GAO Jianting GUO Kaiwen HUAI Hutian LI Junshan ZHANG 

作者机构：Department of Materials Engineering Dalian University of Technology Dailian 116024 China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China 

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

年 卷 期：2006年第22卷第2期

页      面：179-182页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：The authors would like to thank the National Natural Science Foundation of China for the financial support under contract No.59895152 the National High Technology Committee of China under contract No.863-715-005-0030 

主　　题：NiAl-28Cr-5.8Mo-0.2Hf Dy Microstructure Compressive properties 

摘      要：Effect of 0.1 wt pct Dy addition on microstructure and compressive behavior of NiAl-28Cr-5.8Mo-0.2 Hf eutectic alloy was investigated. The results showed that remarkable lamellar refinement can be achieved with the addition of 0.1 wt pct Dy. The Dy addition results in the decrease in Young＇s modulus of alloy and *** of the compressive strength and ductility of alloy at all testing temperatures. The lamellar refinement, the increased dislocation networks located at the interfaces of NiAl/Cr（Mo） and the strengthening of cell boundary are benefical to the improvement of compressive properties of the alloy.