径向锻式应变诱发法制备半固态坯料的研究  

Semi-Solid Billets Prepared by Radial Forging Strain-Induced Melt Activation

作　　者：王永飞[1] 赵升吨[1] 张晨阳[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12期3875-3881,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51335009;51305334);国家04重大科技专项(2012ZX04004021)

摘　　要：采用径向锻式应变诱发法对铝合金6063挤压棒料进行处理,主要研究了径向锻对铝合金6063微观组织的影响,讨论分析了对铝合金6063直接半固态等温处理和先径向锻预变形后半固态等温处理2种方式下的半固态微观组织演化过程。结果表明:随着断面收缩率的增加,径向锻后铝合金6063微观组织的紧密程度增加,但当断面收缩率高于70%时,该变化趋势不明显;相比于半固态等温处理法,采用径向锻式应变诱发法能够获得较为理想的半固态坯料微观组织。The radial forging strain-induced melt activation（RFSIMA） was adopted to process the as-extruded 6063 aluminum alloy.The influence of radial forging on the microstructure of as-extruded 6063 aluminum alloy was investigated.The semi-solid microstructural evolution generated by the directly semi-solid isothermal treatment,and initially radial forging predeformation followed by semi-solid isothermal treatment was analyzed.The results indicate that the compaction degree of RF-deformed 6063 aluminum alloy microstructure gradually increases as the area reduction increases.However,this increasing pattern is not obvious when the area reduction increases from 70% to 85%.In addition,more ideal semi-solid microstructure can be obtained through RFSIMA as compared with the directly semi-solid isothermal treatment.

关 键 词：径向锻式应变诱发法 半固态等温处理法 半固态 铝合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]