【作者】 张娅； 曾小勤； 卢晨； 丁文江；

【Author】 Zhang Ya Zeng Xiaoqin Lu Chen Ding Wenjiang(National Engineering Research Center of Light Alloys Net Forming, School of Materials Science and Engineering, Shanghai Jiaotong University, 1954 Huashan Road,Shanghai,200030)

【机构】 上海交通大学材料科学与工程学院镁合金精密成型中心；

【摘要】 本文研究了ZK60-MM镁合金铸态和挤压态组织和性能。对铸态ZK60-MM镁合金进行微观组织和相分析,发现混合稀土加入后铸态组织晶粒明显细化,相组成为Mg2Zn11相和镁铈二元相。ZK60-MM镁合金经过热挤压后,发现混合稀土加入有抑制动态再结晶晶粒长大作用,含量越高抑制作用越大。相较ZK60合金,ZK60-MM镁合金强度有一定程度提高。更多还原

【Abstract】 The microstructure and mechanical properties of ZK60-MM alloy hot extruded at different temperatures were investigated. The addition of MM played a role of refining the grain of as cast ZK60-MM alloys. ZK60-MM alloys were consisted of Mg2Zn11 phase and Mg-Ce phase in the as-case condition. Furthermore, it was observed that the growth of DRX grains was suppressed due to the pining effect of Mg-Ce phase particles during the hot extrusion process in all studied alloys. Compared with ZK60 alloy, the strength of ZK60-MM alloys were higher.更多还原