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Affiliation of Author(s):材料科学与技术学院

Journal:MATERIALS RESEARCH EXPRESS

Key Words:As-cast Mg-4Y-xZn alloys microstructure thermal conductivity electrical conductivity

Abstract:In this study, the effects of the addition of Zn on the microstructures, thermal and electrical conductivity of as-castMg-4Y-xZn (x = 1, 2, 3, and 4 wt%) alloys were investigated. Results reveal that with the increase of Zn content, the second-phase transformation from the X phase to the W phase occurs. Except for the WZ43 alloy, the amount of solute atoms in the alpha-Mg matrix decreases with the increase of Zn, leading to the decreased lattice distortion and increased thermal conductivity. Therefore, the obtained highest electrical and thermal conductivity of the WZ44 alloy are 13.73 Sm-1 and 95.61W.m(-1).K-1, respectively. The correlation between the electrical conductivity and the thermal conductivity was characterized by the equation lambda = 0.890L(0)T sigma + 6.96 on the basis of the Smith-Palmer equation.

ISSN No.:2053-1591

Translation or Not:no

Date of Publication:2018-06-01

Co-author:武亚杰,Liu Zili,陆程,谢焕建,李健

Correspondence Author:lxq