铝及铝铁合金的加工软化机理

来源期刊：中国有色金属学报1997年第1期

论文作者：李凤珍 刘兆晶 金铨 俞泽民

文章页码：98 - 102

关键词：加工软化 回复 轧制率

Key words：pure aluminiums Al-Fe alloys work-softening rolling ratio recovery

摘    要：研究了三种纯度的铝及其 Al-2%Fe合金在室温轧制状态下的加工软化行为及软化机理。试验证明：99.996%Al当轧制率为80%以上时出现加工软化现象；99.96%Al和99.6%Al 不发生加工软化。用99.996%Al配制的 Al-2%Fe 合金当轧制率为60% 以上时出现加工软化；用99.96%Al 配制的Al-2%Fe合金当轧制率为90%以上时出现加工软化；用99.6％Al 配制的Al-2％Fe合金不发生加工软化。室温回复是加工软化的主要原因；Fe有净化铝基体的作用；弥散的第二相有利于室温回复。

Abstract: The work-softening behaviors and mechanisms of three kinds of pure aluminium and three Al-2%Fe alloys in the rolling state at room temperature were studied, the results show that when the rolling ratio is over 80%, there occurs work-softening in the 99.996%Al but not in the 99.96%Al and 99 .6%Al; that there occur work-softening in the Al(99.996%)-2%Fe alloy when the rolling ratio is over 60% and in the Al(99.96%)-2%Fe alloy when the rolling ratio is over 90%, but not in the Al(99.6%)-2%Fe alloy. The main reason of work-softening is room-temperature recovery which is caused by the dispersive second phases.