Mechanical properties of rapidly solidified Al-Ti alloys after thermal exposure

来源期刊：中国有色金属学报(英文版)2000年第4期

论文作者：吴进明 郑史烈 袁俊 李志章 曾跃武 季振国

文章页码：435 - 440

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

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.