Brittle-to-ductile transition in multiphase NiAl alloy

IMR OpenIR

	Brittle-to-ductile transition in multiphase NiAl alloy
	Cui, CY; Chen, YX; Guo, JT; Qi, YH; Ye, HQ
通讯作者	Cui, CY()
	2002-02-28
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	325 期号:1-2 页码:186-193
摘要	The microstructure of a directionally solidified (DS) NiAl Cr(Mo,Hf) alloy was studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). This alloy was composed of NiAl, Cr(Mo) and Ni2AlHf phases. Tensile testing of this multiphase NiAl alloy was performed from room temperature to 1323 K at various strain rates from 1.04 x 10(-4) s(-1) to 1.04 x 10(-2) s(-1). It was found that the brittle-to-ductile transition temperature (BDTT) of this alloy was higher than values reported for many of NiAl-based alloys and dependent on the strain rate. Regardless of strain rate, at temperatures just above the BDTT. the fracture morphology changed from NiAl's cleavage and debonding along the NiAl Cr(Mo) interface to completely ductile in nature. It was also found that the apparent activation energy responsible for BDT is 463 kJ mol(-1) which may be responsible for the higher BDTT. (C) 2002 Elsevier Science B.V. All rights reserved.
关键词	microstructure BDTT fracture morphology the apparent activation energy (Q)
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:000174080600023
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：21[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/321006/115207
专题	中国科学院金属研究所
通讯作者	Cui, CY
作者单位	Chinese Acad Sci, Met Res Inst, Atom Imaging Solids Lab, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cui, CY,Chen, YX,Guo, JT,et al. Brittle-to-ductile transition in multiphase NiAl alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2002,325(1-2):186-193.
APA	Cui, CY,Chen, YX,Guo, JT,Qi, YH,&Ye, HQ.(2002).Brittle-to-ductile transition in multiphase NiAl alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,325(1-2),186-193.
MLA	Cui, CY,et al."Brittle-to-ductile transition in multiphase NiAl alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 325.1-2(2002):186-193.