Mechanical behaviour of Al/Al₂O₃ composite inpseudo-semi-solid state during isothermal compression

来源期刊：中国有色金属学报(英文版)2009年增刊第2期

论文作者：程远胜 罗守靖

文章页码：368 - 372

Key words：composite; pseudo-semi-solid state; mechanical behaviour; stress—strain curve

Abstract: To gain a better understanding of thixoforging for the Al₂O₃-37%Al composite, its mechanical behavior in the pseudo-semi-solid state was studied by isothermal compression tests. The results show that the values of peak stress obviously decrease with increasing temperature and decreasing strain rate. The compressive true stress—strain curves of the Al₂O₃-37%Al composite can be divided into four stages. They are rapidly ascending, decreasing, steady and slowly ascending. Moreover, the main deformation mechanism controlling deformation of the composite in the pseudo-semi-solid state is the sliding or rotary movement between solid particles.

基金信息：the National Natural Science Foundation of China
the Postdoctor Foundation of China
the Postdoctor Foundation of Heilongjiang