预变形对463K人工时效Al-Cu-Mg合金显微组织的影响

来源期刊：中国有色金属学报2001年第z1期

论文作者：谷亦杰 陈荣 张永刚 黄正 陈昌麒

文章页码：31 - 33

关键词：Al-Cu-Mg合金； 预变形； 空位

Key words：Al-Cu-Mg alloy； pre deformation； vacancy

摘    要：研究了预变形对Al-Cu-Mg合金463K人工时效行为的影响。结果表明 ,预变形可以提高合金的峰值硬度 ,合金峰值硬度的增加来自于S相数目的增加和尺寸的减小 ;并且由于预变形产生的位错可以作为空位的陷阱 ,减少了GP区沉淀析出的数量 ,因此预变形减少了合金在第 1阶段的硬化效果。

Abstract: The effect of pre deformation on the microstructures of Al-3.75%Cu-2.02%Mg (mass fraction) alloy was studied. The results show that the peak hardness of pre deformation sample is increased because of quantity increase and refinement of S phase. Moreover, because the dislocation generated by pre deformation can act as the traps for vacancies, the number of GP zones is reduced for pre deformation sample and hardening effect of the first stage is reduced.