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J Mater Sci Technol  2006, Vol. 22 Issue (02): 164-168    DOI:
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Effect of Nb on the Microstructure and Mechanical Properties of Cast NiAl-Cr(Mo) Eutectic Alloy
Kaiwen HUAI, Jianting GUO, Zirong REN, Qiang GAO, Rui YANG
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Department of Chemistry Engineering, Anshan University of Science and Technology, Anshan 114002, China
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Abstract  The microstructure and mechanical behaviors of NiAl-28Cr-5Mo-1Nb eutectic alloy were investigated by using scanning electron microscopy, X-ray diffraction, transmission electron microscopy and compression tests, respectively. The alloy is mainly composed of three phases, which are the gray lamellar Cr(Mo) plate, black NiAl matrix and semicontinuously distributed Cr2Nb-type Laves phase. Through Nb addition, NiAl-Cr(Mo)/Nb alloy exhibits a reasonable balance of high temperature strength and room temperature compression ductility and its mechanical behaviors are superior to the NiAl-28Cr-6Mo eutectic alloy at all temperature. The elevated temperature compression deformation behavior of NiAl-Cr(Mo)/Nb alloy can be properly described by power-law equation.
Key words:  NiAl-28Cr-5Mo-1Nb      Microstructure      Nb(Cr1-x-yNixAly)2 phase      Mechanical properties...      
Received:  26 November 2004     
Corresponding Authors:  Jianting GUO     E-mail:

Cite this article: 

Kaiwen HUAI, Jianting GUO, Zirong REN, Qiang GAO, Rui YANG. Effect of Nb on the Microstructure and Mechanical Properties of Cast NiAl-Cr(Mo) Eutectic Alloy. J Mater Sci Technol, 2006, 22(02): 164-168.

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