Microstructure and mechanical properties of Ni(3)Al and Ni(3)Al-1B alloys fabricated by SHS/HE

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	Microstructure and mechanical properties of Ni(3)Al and Ni(3)Al-1B alloys fabricated by SHS/HE
	J. T. Guo; L. Y. Sheng; Y. Xie; Z. X. Zhang; V. E. Ovcharenko; H. Q. Ye
	2011
发表期刊	Intermetallics
ISSN	0966-9795
卷号	19 期号:2 页码:137-142
摘要	The well-densified Ni(3)Al alloys without and with boron addition were fabricated by self-propagation high-temperature synthesis and hot extrusion (SHS/HE) technology. Microstructure investigation showed that Ni(3)Al and Ni(3)Al-1B alloys contained fine grain structure. Analysis of X-ray spectra as well as transmission electron microscopy studies revealed that three phases present in all alloys: gamma-Ni, Ni(3)Al and dispersoids of alpha- Al(2)O(3) and gamma- Al(2)O(3). However, beta-NiAl, Ni(3)B phase and twinned Ni(3)Al crystal are observed in the Ni(3)Al-1B alloy. In addition, dislocations with high density exist in all alloys. The mechanical test showed that the B addition leads to obvious improvement in yield strength and compressive ductility, and compared with the ones synthesized by combustion, SHS/HE synthesized Ni(3)Al and Ni(3)Al-1B alloys exhibit more excellent mechanical properties. (C) 2010 Elsevier Ltd. All rights reserved.
部门归属	[guo, j. t.; sheng, l. y.; xie, y.; ye, h. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [sheng, l. y.] peking univ, beijing 100871, peoples r china. [sheng, l. y.; zhang, z. x.] pku hkust shenzhen hongkong inst, shenzhen 518057, peoples r china. [ovcharenko, v. e.] russian acad sci, inst strength phys & mat sci, siberian branch, tomsk, russia.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jtguo@imr.ac.cn lysheng@yeah.net
关键词	Nickel Aluminides Based On Ni(3)Al Mechanical Properties At Ambient Temperature Reaction Synthesis Microstructure Combustion Synthesis Nickel Aluminides Boron
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30365
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. T. Guo,L. Y. Sheng,Y. Xie,et al. Microstructure and mechanical properties of Ni(3)Al and Ni(3)Al-1B alloys fabricated by SHS/HE[J]. Intermetallics,2011,19(2):137-142.
APA	J. T. Guo,L. Y. Sheng,Y. Xie,Z. X. Zhang,V. E. Ovcharenko,&H. Q. Ye.(2011).Microstructure and mechanical properties of Ni(3)Al and Ni(3)Al-1B alloys fabricated by SHS/HE.Intermetallics,19(2),137-142.
MLA	J. T. Guo,et al."Microstructure and mechanical properties of Ni(3)Al and Ni(3)Al-1B alloys fabricated by SHS/HE".Intermetallics 19.2(2011):137-142.