2A12铝合金棒材粗晶环影响机制的探讨  

Discussion of the influence mechanism of the coarse grain ring of 2A12 aluminum alloy bars

作　　者：向晶[1] 莫宇飞[1] 谢尚昇[1] 李剑[1] 周伟[1] 周文标 

机构地区：[1]广西南南铝加工有限公司,广西南宁530031

出　　处：《轻合金加工技术》2017年第12期37-41,共5页Light Alloy Fabrication Technology

基　　金：2016年广西科技项目(桂科AB16380021)

摘　　要：针对2A12铝合金棒材普遍存在的粗晶环问题进行研究。通过扫描电子显微镜和金相分析等分析测试方法,试验研究了化学成分和铸锭均匀化处理工艺对2A12铝合金挤压棒材粗晶环的影响。结果表明,通过优化化学成分和铸锭均匀化处理工艺,可将2A12铝合金挤压棒材粗晶环深度控制在1 mm以内。The research was focused on the coarse grain ring widely existing in 2A12 aluminum alloy bars. The influence of chemical compositions and ingot homogenization treatment on the coarse grain ring of 2A12 aluminum alloy bars was studied with scanning electron microscopy and metallographic analysis. The results show that the depth of the peripheral coarse grain of 2A12 aluminum alloy bar can be controlled within 1 mm after optimization of chemical compositions and homogenization treatment process.

关 键 词：2A12铝合金 棒材 粗晶环 化学成分 均匀化处理 

分 类 号：TG379[金属学及工艺—金属压力加工]