INFLUENCE OF T5 TREATMENT ON MICROSTRUCTURE AND PROPERTIES OF EXTRUDED ZK60 MAGNESIUM ALLOY

摘要：

As-cast ZK60 magnesium alloy that has been treated by homogenizing was forward extruded at 380℃ and different extrusion ratios. Half of the extruded samples were treated by T5 treatment (10 hours at 170℃). The microstructure and mechanical properties of extruded samples that have been treated by T5 treatment and not been treated by T5 treatment have been measured. Experimental results show that the T5 treatment of extruded ZK60 magnesium alloy will cause the tensile strength and hardness to increase in some sort, the yield strength to increase obviously, but elongation to decrease slightly. When ZK60 magnesium alloy is extruded at 380℃, the second phase, MgZn and a small quantity of MnZn2, will precipitate, and the distribution of second phase is even and dispersed. After T5 treatment, the change of grain size is not obvious, but the quantity of precipitated phase obviously increases comparing with extruded samples, and some of the precipitated phase aggregate and grow.

关键词： As-cast ZK60 magnesium alloy eztrusion T5 treatment mechanical properties microstructure

作者: ZHIMIN ZHANG BAOHONG ZHANG

作者单位: School of Materials Science and Engineering, North University of China, Taiyuan 030051, Peoples Rep School of Materials Science and Engineering, North University of China, Taiyuan 030051, Peoples Rep

会议类型: 国际会议

会议名称: 第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)

会议地点: 哈尔滨

会议语种:英文

页码: 996-1001

在线出版日期: 2008-09-03（万方平台首次上网日期，不代表论文的发表时间）