径向锻复合单向压缩变形-再结晶熔融法制备半固态坯料的研究  

Semi-solid Billet Prepared by Radial Forging Combined with Unidirectional Compression Recrystallization and Partial Melting

作　　者：王永飞[1] 赵升吨[1] 范淑琴[1] 赵永强[1] 

机构地区：[1]西安交通大学,陕西西安710049

出　　处：《稀有金属材料与工程》2017年第10期2900-2907,共8页Rare Metal Materials and Engineering

基　　金：国家自然科学基金重点项目(51335009);国家04重大科技专项(2009ZX04005-031);陕西省自然科学基金(2014JQ7273)

摘　　要：采用径向锻复合单向压缩变形-再结晶熔融(RFCUC-RAP)法和径向锻复合多向压缩变形-再结晶熔融(RFCMC-RAP)法对6063铝合金挤压棒料进行处理。对比分析了合金在直接半固态等温处理(SSIT)法、RFCUC-RAP法及RFCMC-RAP法3种工艺下微观组织的演化过程。结果表明:相比于直接SSIT法,采用RFCUC-RAP法和RFCMC-RAP法制备出的6063铝合金半固态坯料的晶粒尺寸明显减小,晶粒形状也有所改善。同时,由于变形过程相对简单,RFCUC-RAP法比RFCMC-RAP法更有优势,是一种有效的制备高质量半固态坯料的方法。The radial forging combined with unidirectional compression recrystallization and partial melt（RFCUC-RAP） and radial forging combined with multi-axial compression recrystallization and partial melt（RFCMC-RAP） were proposed to prepare 6063 Al alloy semi-solid billet. The microstructural evolutions of semi-solid 6063 Al alloy prepared by direct semi-solid isothermal treatment（SSIT）, RFCUC-RAP and RFCMC-RAP were investigated. Results show that the solid grains of semi-solid billet prepared by direct SSIT are large. However, solid grains of semi-solid billet prepared by RFCUC-RAP and RFCMC-RAP are fine and spherical. Additionally, the RFCUC-RAP is superior to the RFCMC-RAP owing to the relatively simple deformation process, which is an effective method to prepare high-quality semi-solid billet.

关 键 词：半固态 铝合金 径向锻复合单向压缩变形 再结晶熔融法 

分 类 号：TG306[金属学及工艺—金属压力加工]