Microstructure, brittle-ductile transition temperature and elevated temperature compressive behavior of the directionally solidified NiAl-Cr(Mo)-Hf alloy

doi:10.1016/j.msea.2004.06.065

IMR OpenIR

	Microstructure, brittle-ductile transition temperature and elevated temperature compressive behavior of the directionally solidified NiAl-Cr(Mo)-Hf alloy
	Cui, CY; Guo, JT; Ye, HQ
通讯作者	Cui, CY(cui.chuanyong@nims.go.jp)
	2004-11-15
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	385 期号:1-2 页码:359-366
摘要	The directionally solidified NiAl-27Cr-5.6Mo-0.4Hf (at.%) alloy was hot isostatically pressed at 1573 K, 100MPa for 2h and then annealed at 1323 K for 40 h. Microstructure examination revealed that the present alloy was mainly composed of three phases, i.e. the NiAl matrix, the lamellar Cr(Mo) and Heusler phase (Ni2AlHf). The interfaces between the NiAl-Cr(Mo), the NiAl-Ni2AlHf were atomically flat. The mechanical properties including the brittle-ductile transition temperature and the high temperature compressive behavior were also tested. The BDTT of the alloy was about 1233 K at a strain rate of 1.04 x 10(-4) s(-1) and dependent on strain rate. This strain-rate dependent BDT can be explained by the cooperative dislocation generation model. The investigation on the high temperature compressive behavior between 1200 and 1300 K showed that the deformation behaviors of the alloy could be adequately described by the standard power-law. The possible strengthening mechanism was discussed. (C) 2004 Elsevier B.V. All rights reserved.
关键词	microstructure Ni2AlHf phase BDTT deformation behavior
DOI	10.1016/j.msea.2004.06.065
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000224822000045
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81311
通讯作者	Cui, CY
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cui, CY,Guo, JT,Ye, HQ. Microstructure, brittle-ductile transition temperature and elevated temperature compressive behavior of the directionally solidified NiAl-Cr(Mo)-Hf alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2004,385(1-2):359-366.
APA	Cui, CY,Guo, JT,&Ye, HQ.(2004).Microstructure, brittle-ductile transition temperature and elevated temperature compressive behavior of the directionally solidified NiAl-Cr(Mo)-Hf alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,385(1-2),359-366.
MLA	Cui, CY,et al."Microstructure, brittle-ductile transition temperature and elevated temperature compressive behavior of the directionally solidified NiAl-Cr(Mo)-Hf alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 385.1-2(2004):359-366.