Microstructure and Thermophysical Properties of Mg-Ga Alloys

作     者：FAN Xiaoming YE Peiyi ZHAO Tong XU Lianyou CHENG Xiaomin 范晓明;YE Peiyi;ZHAO Tong;XU Lianyou;CHENG Xiaomin

作者机构：School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2021年第36卷第4期

页      面：490-496页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the 2019 Scientific and Technological Innovation Major Project of Hubei Province(No.2019AAA031) 

主　　题：Mg-Ga alloy phase change material thermal energy storage latent heat storage 

摘      要：The microstructure and thermal characteristics of Mg-36%Ga,Mg-43%Ga,and Mg-45%Ga(wt%) alloys were *** experimental results show that the microstructure of Mg-36%Ga alloy is mainly composed of primary a-Mg phase and a-Mg+Mg_(5)Ga_(2) eutectic phase,the microstructure of Mg-43%Ga alloy is mainly composed of a-Mg+Mg_(5)Ga_(2) eutectic phase,and the microstructure of Mg-45%Ga alloy is mainly composed of primary Mg_(5)Ga_(2) phase and a-Mg+Mg_(5)Ga_(2) eutectic *** melting enthalpies of Mg-36%Ga,Mg-43%Ga,and Mg-45%Ga are 146.41,171.90,and 113.90 J/g,with the phase change temperature of 422.57,422.70,and 422.90 ℃,***-43%Ga alloy contains the highest melting enthalpy because of the highest content of a-Mg+Mg_(5)Ga_(2) eutectic *** addition,the thermal expansion of the three alloys increases with increasing temperature,while the thermal diffusivity and thermal conductivity decreases with increasing content of Ga.