Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 10    No. 4    August 2000

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Mechanical properties of rapidly solidified Al-Ti alloys
after thermal exposure①
WU Jin-ming(吴进明)1, ZHENG Shi-lie(郑史烈)1, YUAN Jun(袁 俊)2,
LI Zhi-zhang(李志章)1, ZENG Yue-wu(曾跃武)1, JI Zhen-guo(季振国)2

1. Department of Materials Science and Engineering, Zhejiang University,
Hangzhou 310027, P.R.China;
2. State Key Laboratory of Silicon Materials, Zhejiang University,
Hangzhou 310027, P.R.China

Abstract:Mechanical properties, for example the elastic modulus, yield stress and ultimate tensile stress, of the rapidly solidified (RS) Al-Ti alloy after thermal exposure have been investigated using an Instron tensile test machine at a strain rate of 1.5×10-4s-1. The results show that the elastic modulus of the Al-Ti alloy increases with increasing Ti concentration, which can be predicted with Halpin-Tsai equation, Eshelby method and hereby re-modified shear lag model; the
yield strength and the ultimate tensile stress increase with increasing volume fraction and decreasing particle size of the Al3Ti and fine grain strengthening is suggested to be the main operative strengthening mechanism.


Key words: Al-Ti alloy; grain strengthening; elastic modulus; mechanical properties

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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