Al-Si合金挤压棒材再结晶组织演变  

Recrystallization Microstructure Evolution of Al-Si Squeezing Bar

作　　者：陈亚军[1] 王自东[1] 陈琦[1] 刘玉敏[1] 连玉栋[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2004年第3期297-300,共4页Journal of University of Science and Technology Beijing

基　　金：国家"863"计划资助项目(No.2002AA33607)

摘　　要：对φ5mm的进口Al-1％Si合金棒材的段料在不同温度下保温12h,水淬处理.通过对不同条件下得到的再结晶组织进行对比研究,分析了该材料再结晶规律,提出了其优化热处理工艺.结果表明:该材料原有的等轴晶组织转变为塑性和导电性能良好的单晶组织.Al-1%Si segments with 5 mm in diameter were held at different temperatures for 12 h and quenched. The recrystallization mechanism of the material was investigated by contrasting recrystallization texture after different-temperature heat treatment. An optimal heat-treated process was proposed, by which the original tissue with orbicular crystals of the material can be transformed into single crystals with high extended rate and electrical conductivity.

关 键 词：热处理 再结晶 单晶 晶粒尺寸 组织 

分 类 号：TG450[金属学及工艺—焊接]