Configuration and the recovery of defects in TiAl intermetallic compounds studied by positron annihilation

	Configuration and the recovery of defects in TiAl intermetallic compounds studied by positron annihilation
	Li, ZX; Wang BY(王宝义); Wang DN(王丹妮); Zhang LZ(张兰芝); Qin XB(秦秀波); Wang, BY; Wang, DN; Zhang, LZ; Qin, XB; Xue, DS
刊名	INTERMETALLICS
	2010
卷号	18 期号:11 页码:2259-2261
关键词	Titanium aluminides, based on TiAl Defects constitutional vacancies irradiation effects
通讯作者	[Wang, B. Y. ; Wang, D. N. ; Zhang, L. Z. ; Qin, X. B.] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China ; [Li, Z. X. ; Xue, D. S.] Lanzhou Univ, Minist Educ China, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
英文摘要	Defects of doped and neutron-irradiated TiAl alloys were investigated using positron annihilation lifetime and coincidence doppler broadening spectroscopies In doped alloys, niobium additions replaced some atoms in the lattice, which maintains the ordered structure as undoped, while silicon additions Induced Ti vacancies After neutron irradiation, a number of vacancy-type defects were Introduced, including some large vacancies, which can be congregated and hardly be eliminated by annealing at temperature above 1000 K The vacancy-type defects in (Ti(51)Al(49))(98)Si(2) began to migrate at 452 K, which is lower than in Ti(51)Al(49) alloy This probably resulted from vacancies induced by the addition of silicon, which facilitated atom migration and decreased initial recovery temperature. (C) 2010 Elsevier Ltd. All rights reserved.
学科主题	Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
类目[WOS]	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
原文出处	SCI
语种	英语
WOS记录号	WOS:000282710400034
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239703]
专题	高能物理研究所_多学科研究中心高能物理研究所_核技术应用研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Li, ZX,Wang BY,Wang DN,et al. Configuration and the recovery of defects in TiAl intermetallic compounds studied by positron annihilation[J]. INTERMETALLICS,2010,18(11):2259-2261.
APA	Li, ZX.,王宝义.,王丹妮.,张兰芝.,秦秀波.,...&Xue, DS.(2010).Configuration and the recovery of defects in TiAl intermetallic compounds studied by positron annihilation.INTERMETALLICS,18(11),2259-2261.
MLA	Li, ZX,et al."Configuration and the recovery of defects in TiAl intermetallic compounds studied by positron annihilation".INTERMETALLICS 18.11(2010):2259-2261.