半固态ZL201合金的重熔加热合金组织  

Microstructural Evolution of the Semi-Solid ZL201 Alloy During Remelting

作　　者：王平[1] 康皓[1] 路贵民[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2005年第5期437-439,共3页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2002AA337010;2003AA305090);辽宁省自然科学基金资助项目(20031011)

摘　　要：采用电子显微镜及图像分析仪,系统研究了近液相线铸造ZL201合金在二次加热过程中的组织演变·结果表明:ZL201铝合金半固态坯料在620～630℃保温5～10min,能够获得适用于半固态成形的触变组织,此时,晶粒平均等积圆直径为43 8μm,晶粒平均圆度为1 87·近液相线半连续铸造可以获得理想的ZL201合金半固态坯料·The microstructural evolution nearby-liquidus semi-continuous casting ZL201 aluminum alloy during remelting was studied by means of electron microscope and image analyzer. The results showed that a thixotropic microstructure liable to form semi-solid metal is obtained when the alloy is remelted at 620℃～630℃ then held for 5min～10min. Under such conditions, the average equal-area-circle grain diameter is 43 8μm with average roundness 1 87. An ideal semi-solid or paste-like ZL201Al-alloy is thus obtained through nearby liquidus semi-continuous casting.

关 键 词：ZL201铝合金 半固态 半连续铸造 重熔加热 组织 

分 类 号：TG292[金属学及工艺—铸造]