Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis

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	Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis
	L. Y. Sheng; T. F. Xi; C. Lai; J. T. Guo; Y. F. Zheng
	2012
Source Publication	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
Volume	22 Issue:3 Pages:489-495
Abstract	The well-densified Ni3Al-0.5B-5Cr alloy was fabricated by self-propagation high-temperature synthesis and extrusion technique. Microstructure examination shows that the synthesized alloy has fine microstructure and contains Ni3Al, Al2O3, Ni3B and Cr3Ni2 phases. Moreover, the self-propagation high-temperature synthesis and extrusion lead to great deformation and recrystallization in the alloy, which helps to refine the microstructure and weaken the misorientation. In addition, the subsequent extrusion procedure redistributes the Al2O3 particles and eliminates the gamma-Ni phase. Compared with the alloy synthesized without extrusion, the Ni3Al-0.5B-5Cr alloy fabricated by self-propagation high-temperature synthesis and extrusion has better room temperature mechanical properties, which should be ascribed to the microstructure evolution.
description.department	[sheng li-yuan; xi ting-fei; lai chen] pku hkust shenzhen hong kong inst, shenzhen 518057, peoples r china. [sheng li-yuan; zheng yu-feng] peking univ, coll engn, beijing 100871, peoples r china. [guo jian-ting] chinese acad sci, inst met res, shenyang 110016, peoples r china.;sheng, ly (reprint author), pku hkust shenzhen hong kong inst, shenzhen 518057, peoples r china.;lysheng@yeah.net
Keyword	Ni3al Intermetallic Compound Self-propagation High-temperature Synthesis Extrusion Microstructure Mechanical Properties Combustion Synthesis Grain-size Intermetallics Aluminides Boundaries Ductility Nickel
URL	查看原文
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/60218
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	L. Y. Sheng,T. F. Xi,C. Lai,et al. Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis[J]. Transactions of Nonferrous Metals Society of China,2012,22(3):489-495.
APA	L. Y. Sheng,T. F. Xi,C. Lai,J. T. Guo,&Y. F. Zheng.(2012).Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis.Transactions of Nonferrous Metals Society of China,22(3),489-495.
MLA	L. Y. Sheng,et al."Effect of extrusion process on microstructure and mechanical properties of Ni3Al-B-Cr alloy during self-propagation high-temperature synthesis".Transactions of Nonferrous Metals Society of China 22.3(2012):489-495.

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