不同预变形方式的SIMA法制备ZCuSn10铜合金半固态坯料  

Microstructural Observation of the Semi-solid ZCuSn10 Copper Alloy Billets Fabricated by SIMA Process with Different Pre-deformation Methods

作　　者：吴龙彪[1] 王佳[1,2] 肖寒[1] 卢德宏[1] 周荣锋[1] 周荣[1] 

机构地区：[1]昆明理工大学材料科学与工程学院 [2]四川理工学院机械工程学院

出　　处：《特种铸造及有色合金》2014年第2期167-170,共4页Special Casting & Nonferrous Alloys

基　　金：云南省应用基础研究重点项目(2011FA007);高等学校博士学科点专项科研基金资助项目(20125314120013);云南省教育厅科学研究项目(2012Y543);四川理工学院培育项目(2013PY05)

摘　　要：利用镦粗、锻造拔长、冷轧3种不同预变形方式的SIMA法制备ZCuSn10铜合金半固态坯料,对3种不同预变形方式的ZCuSn10铜合金在重熔处理过程中的微观组织进行了研究。结果表明,采用锻造拔长、冷轧为预变形的SIMA法制备出的半固态坯料在900℃保温15min能够得到组织均匀性好,晶粒圆整度高的半固态坯料,平均晶粒直径在40～70μm之间。锻造拔长制备的半固态坯料液相析出速度和球化速度较快,冷轧制备的半固态坯料等温重熔平均晶粒直径较小。Semi-solid ZCuSn10 copper alloy billets were fabricated by strain induced melt activated method such as upsetting,forging stretching,cold rolling pre-deformation methods.The microstructure of semi-solid ZCuSn10 copper alloy billets prepared by three different pre-deformation methods was observed during remelting process.The results indicate that the semi-solid microstructure prepared by forging stretching and cold rolling exhibits desirable uniformity and spheroidization degree with an average grain size between 40～70 μm with remelting at 900 ℃for 15 min.The liquid deposition rate and spheroidization velocity of semi-solid billet prepared by forging stretching is faster,and the grain diameter of semi-solid billet prepared by cold-rolling is small.

关 键 词：ZCuSn10铜合金 SIMA法 预变形方式 半固态坯料 显微组织 

分 类 号：TG146.11[一般工业技术—材料科学与工程]