Simultaneous improvement of strength and ductility in NiAl-Cr(Mo)-Hf near eutectic alloy by small amount of Ti alloying addition

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	Simultaneous improvement of strength and ductility in NiAl-Cr(Mo)-Hf near eutectic alloy by small amount of Ti alloying addition
	H. T. Li; J. T. Gou; H. Q. Ye; Q. Wang; J. C. He
	2008
发表期刊	Materials Letters
ISSN	0167-577X
卷号	62 期号:1 页码:61-64
摘要	Effects of Ti alloying addition on the microstructure and room temperature compression deformation behavior of a NiAl-Cr(Mo)-Hf near eutectic alloy were investigated by SEM, TEM, EDX and compression test. The results showed that compared with base alloy, the compressive fracture strain and 0.2% yield strength of the Ti-containing alloy were enhanced simultaneously. Disordered (Ti,Hf) solid solution phase together with the blocky Heusler phase Ni2Al(Ti,Hf) precipitation presented at eutectic cell boundaries is responsible for the enhancement in ductility due to the better deformation ability of (Ti,Hf) solid solution phase. The improvement in strength depends mainly on the solid solution strengthening in NiAl matrix by large amount of Ti due to its larger solid solubility relative to Hf in NiAl. (c) 2007 Elsevier B.V. All rights reserved.
部门归属	[li hu-tian; wang qiang; he ji-cheng] northeastern univ, minist educ, key lab electromagnet proc mat, shenyang 110004, peoples r china. [li hu-tian; gou jian-ting; ye heng-qiang] chinese acad sci, inst met res, shenyang 110016, peoples r china.;li, ht (reprint author), northeastern univ, minist educ, key lab electromagnet proc mat, shenyang 110004, peoples r china;htli@imr.ac.cr
关键词	Microstructure (Ti Hf) Solid Solution Mechanical Properties Heusler Phase Intermetallic Alloys And Compounds Nial
URL	查看原文
WOS记录号	WOS:000251638800018
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32869
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. T. Li,J. T. Gou,H. Q. Ye,et al. Simultaneous improvement of strength and ductility in NiAl-Cr(Mo)-Hf near eutectic alloy by small amount of Ti alloying addition[J]. Materials Letters,2008,62(1):61-64.
APA	H. T. Li,J. T. Gou,H. Q. Ye,Q. Wang,&J. C. He.(2008).Simultaneous improvement of strength and ductility in NiAl-Cr(Mo)-Hf near eutectic alloy by small amount of Ti alloying addition.Materials Letters,62(1),61-64.
MLA	H. T. Li,et al."Simultaneous improvement of strength and ductility in NiAl-Cr(Mo)-Hf near eutectic alloy by small amount of Ti alloying addition".Materials Letters 62.1(2008):61-64.