MgCO_3对AZ63镁合金晶粒细化工艺的研究  

Study on the Process of Refining by MgCO_3 on AZ63 Magnesium Alloy

作　　者：刘明伟[1] 陈体军[1,2] 黄连凯[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州市730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,兰州市730050

出　　处：《中国铸造装备与技术》2011年第5期18-20,共3页China Foundry Machinery & Technology

摘　　要：研究了MgCO3对AZ63镁合金晶粒细化工艺,结果表明:MgCO3对AZ63镁合金细化明显,随其加入量的增加,晶粒显著细化。当MgCO3加入量为1.2%时,晶粒最小为55μm;此外,晶粒随保温时间的延长粗化明显,但对浇注温度不敏感。Refining process of AZ63 magnesium alloy by MgCO3 has been studied. The results revealed that the MgCO3 refiner was effective to AZ63 and the grains have been refined increasing with its addition. The mean grain size reached the minimum value of 55 μm as added 1.2wt% MgCO3. Furthermore, the alloy was refined obviously as the holding time prolonged but not sensitive to the pouring temperature.

关 键 词：MGCO3 AZ63 晶粒细化 

分 类 号：TG146.22[一般工业技术—材料科学与工程]