摘要
研究了经MgCO3细化处理后的AM60B镁合金在610℃半固态等温热处理过程中的微观组织演化。结果表明,镁合金原始组织晶粒大小不同,其半固态演变方式有很大差异;粗大晶粒演化过程包括最初的树枝晶、枝晶合并、溶质扩散、晶粒块状化和最后的球化五个阶段;对于细小晶粒,一颗原始细小等轴晶一般最终形成一个初生α晶粒。
The microstructural evolution of AM60B magnesium alloy refined by MgCO3 during 610 ℃ semi-solid isothermal heat treatment was studied. The results show that the semi-solid evolution mode of magnesium alloys varies greatly with the grain size of the original microstructure. The evolution of coarse grains includes five stages: the initial dendrites, dendrite consolidation, solute diffusion, grain bulk formation and spheroidization. For fine grains, a primitive fine equiaxed grain generally eventually forms a primary alpha grain.
作者
王瑞权
邱葭菲
程勤华
陈云祥
黄海军
WANG Ruiquan;QIU Jiafei;CHENG Qinhua;CHEN Yunxiang;HUANG Haijun(Department of Materials Technology, Zhejiang Institute of Mechanical and Electrical Engineering, Hangzhou 310053, China;School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China)
出处
《铸造技术》
CAS
2019年第10期1064-1066,1070,共4页
Foundry Technology
基金
浙江机电集团公司科技项目（2017JD004）
浙江省教育厅课题（Y201738262）
浙江机电职业技术学院科教融合项目（A-0271-18-201）
