DEVELOPMENT OF HIGH STRENGTH Mg-Cu-Zn ULTRAFINE EUTECTIC COMPOSITES WITH ENHANCED PLASTICITY

摘要：

Mg-Cu-Zn ultraflne eutectic composites with different length scale heterogeneity, consisting of micrometer size dendrites and/or ultrafine scale bimodal eutectics, exhibit high yield strength as well as good plasticity at room temperature compression. Among these alloys, micron-scale α-Mg dendrites reinforced ultrafine eutectic composites exhibit high yield strength of 310 ～ 420 MPa and large plasticity of 7 ～ 12％. Meanwhile, a Mg72CusZn23 alloy comprising a bimodal eutectic structure without the micron-scale α-Mg dendrites shows the optimized mechanical properties the highest yield strength of 455 MPa combined with a considerable plastic strain of -5％.

关键词： Composites ternary alloy systems alloy design casting microstructure

作者: KI AN SONG KI BUEM KIM JIN MAN PARK JAE SEOL LEE JOON SIK PARK WON HEE LEE DO HYANG KIM

作者单位: Department of Advanced Materials Engineering, Sejong University, 98 Gunja-dong, Gwnagjin-gu, Seoul, Center for Non-crystalline Materials, Department of Metallurgical Engineering, Yonsei University, 13 Korea Institute of Industrial Technology (KITECH), 1110-9 Oryong-dong, Buk-gu, Gwangju 500-480, Kore Division of Advanced Materials Engineering, Hanbat National University, Daejoen 305-719, Korea

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: 947-952

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）