A PAT study of influences of precipitation on defects and electronic density in Al-Li-Cu-Mg-Zr alloys

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	A PAT study of influences of precipitation on defects and electronic density in Al-Li-Cu-Mg-Zr alloys
	W. M. Wu; Y. J. Gao; L. X. Luo; W. Deng; S. J. Xu; X. P. Zhong; X. J. Jiang
	1997
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	7 期号:1 页码:42-45
摘要	The positron annihilation lifetime spectra of an Al-Li-Cu-Mg-Zr alloy in the conditions of under-ageing, peak-ageing and over-ageing were measured. The results showed that the precipitation and growth of delta' (Al3Li) phase particles increased the bulk electronic density, while the precipitation of S' (Al2CuMg) phase particles decreased the bulk electronic density. A large number of vacancies were recovered during the peak-ageing process, which made the number of defects decreased. However, the number of defects increased after the over-ageing process, which was related to the precipitation of S' phase particles.
部门归属	guangxi univ,dept phys,nanning 530004,peoples r china. acad sinica,inst met res,shenyang 110015,peoples r china.
关键词	Positron Lifetime Spectra Al-li-cu-mg-zr Alloy Ageing Precipitation Defects Bulk Electronic Density Positron
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38147
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. M. Wu,Y. J. Gao,L. X. Luo,et al. A PAT study of influences of precipitation on defects and electronic density in Al-Li-Cu-Mg-Zr alloys[J]. Transactions of Nonferrous Metals Society of China,1997,7(1):42-45.
APA	W. M. Wu.,Y. J. Gao.,L. X. Luo.,W. Deng.,S. J. Xu.,...&X. J. Jiang.(1997).A PAT study of influences of precipitation on defects and electronic density in Al-Li-Cu-Mg-Zr alloys.Transactions of Nonferrous Metals Society of China,7(1),42-45.
MLA	W. M. Wu,et al."A PAT study of influences of precipitation on defects and electronic density in Al-Li-Cu-Mg-Zr alloys".Transactions of Nonferrous Metals Society of China 7.1(1997):42-45.