Influence of Cr and Nb on Defects and d-d Electron Interactions in TiAl Alloys Researched by Positron Annihilation Techniques

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	Influence of Cr and Nb on Defects and d-d Electron Interactions in TiAl Alloys Researched by Positron Annihilation Techniques
	Zhu Yingying 1,2; Deng Wen 2,3; Sun Shunping 2; Jiang Haifeng 2; Huang Yuyang 2; Cao Mingzhou 3; Xiong Liangyue 3
通讯作者	Zhu Yingying()
	2009-02-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	38 期号:2 页码:271-274
摘要	The positron lifetime and coincidence Doppler broadening spectra have been measured in pure Al, Si, Ti, Cr, Nb elements and Ti(50)Al(50), Ti(50)Al(48)Cr(2), Ti(50)Al(48)Nb(2) alloys. It has been found that the 3d electron signal and the electron density-for binary TiAl alloy are relative low due to the Ti 3d-Al 3p interactions. The addition of Cr and Nb atoms to TiAl alloy leads to the increase of electron densities in the bulk and grain boundaries simultaneously as well as the enhancement of d-d electron interactions. The d electron signal in the spectrum of Ti(50)Al(48)Cr(2) alloy is higher than that of Ti(50)Al(48)Nb(2) alloy. The effects of Cr and Nb on the d electrons of TiAl alloys have been discussed. Key words: TiAl alloys; d-d electron interactions; defects; positron annihilation
关键词	TiAl alloys d-d electron interactions defects positron annihilation
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000264167400019
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：2[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/321006/98252
专题	中国科学院金属研究所
通讯作者	Zhu Yingying
作者单位	1.Henan Polytech Univ, Dept Chem & Phys, Jiaozuo 454000, Peoples R China 2.Guangxi Univ, Nanning 530004, Peoples R China 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhu Yingying,Deng Wen,Sun Shunping,et al. Influence of Cr and Nb on Defects and d-d Electron Interactions in TiAl Alloys Researched by Positron Annihilation Techniques[J]. RARE METAL MATERIALS AND ENGINEERING,2009,38(2):271-274.
APA	Zhu Yingying.,Deng Wen.,Sun Shunping.,Jiang Haifeng.,Huang Yuyang.,...&Xiong Liangyue.(2009).Influence of Cr and Nb on Defects and d-d Electron Interactions in TiAl Alloys Researched by Positron Annihilation Techniques.RARE METAL MATERIALS AND ENGINEERING,38(2),271-274.
MLA	Zhu Yingying,et al."Influence of Cr and Nb on Defects and d-d Electron Interactions in TiAl Alloys Researched by Positron Annihilation Techniques".RARE METAL MATERIALS AND ENGINEERING 38.2(2009):271-274.