电脉冲孕育处理对Al-15Mg_2Si-1Cu合金组织和性能的影响  

Effect of electric pulse modification on microstructure and property of Al-15Mg_2Si-1Cu alloy

作　　者：王邵鹏 王冰[1] 唐立丹[1] 周小平[1] 梁策[1] 

机构地区：[1]辽宁工业大学材料科学与工程学院,辽宁锦州121001

出　　处：《轻合金加工技术》2015年第7期15-17,42,共4页Light Alloy Fabrication Technology

基　　金：辽宁省高校优秀人才(LJQ2013068);2014辽宁省大学生创新训练计划项目(201410154006);教育厅高校创新团队项目(LT2013014)

摘　　要：研究了电脉冲处理参数对Al-15Mg2Si-1Cu合金组织和性能的影响。结果表明,电脉冲处理能够明显减小初生Mg2Si相的尺寸;与未脉冲处理时相比,脉冲处理后Mg2Si相尺寸降低约60%,其中当脉冲电压为500 V时,Mg2Si尺寸最小,约为10μm^30μm;电脉冲处理仅改变了Al-15Mg2Si-1Cu合金中相的形状、尺寸、分布,未改变其相组成;经过电脉冲处理后的Al-15Mg2Si-1Cu合金的力学性能较好,当脉冲电压为500 V时抗拉强度最高,伸长率最高。Investigation was carried on how electric pulse modification （EPM）influences microstructure and property of Al-15Mg2Si-1Cu alloy. The results show that the size of Mg2Si phase with EPM decreases by 60% compared with the one without EPM. When pulse voltage is 500 V ,the size of Mg2Si phase reaches the minimun, about 10 -30 μm. After EPM, morphology, size and distribution change a lot, but the phase structure doesn＇ t change, and hardness, strength and elongation of Al-15Mg2Si-1 Cu alloy are improved. When the pulse voltage is 500 V, both strength and elongation reach the highest value.

关 键 词：电脉冲 MG2SI 力学性能 

分 类 号：TG292[金属学及工艺—铸造]