Effect of 0.1 wt pct Dy Addition on Morphology and Compressive Behavior of Cast NiAl-28Cr-5.8Mo-0.2Hf

J Mater Sci Technol ›› 2006, Vol. 22 ›› Issue (02): 179-182.

• Research Articles • Previous Articles Next Articles

Effect of 0.1 wt pct Dy Addition on Morphology and Compressive Behavior of Cast NiAl-28Cr-5.8Mo-0.2Hf

Qiang GAO, Jianting GUO, Kaiwen HUAI, Hutian LI, Junshan ZHANG

Department of Materials Engineering, Dalian University of Technology, Dailian 116024, China; Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Received:2005-03-02 Revised:2005-05-31 Online:2006-03-28 Published:2009-10-10
Contact: Junshan ZHANG

Abstract

Abstract: 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 the enhancement 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.

Key words: NiAl-28Cr-5.8Mo-0.2Hf, Dy, Microstructure, Compressive properties

Qiang GAO, Jianting GUO, Kaiwen HUAI, Hutian LI, Junshan ZHANG. Effect of 0.1 wt pct Dy Addition on Morphology and Compressive Behavior of Cast NiAl-28Cr-5.8Mo-0.2Hf[J]. J Mater Sci Technol, 2006, 22(02): 179-182.

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Effect of 0.1 wt pct Dy Addition on Morphology and Compressive Behavior of Cast NiAl-28Cr-5.8Mo-0.2Hf

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