摘要
通过重力铸造和挤压铸造制备了Mg-5Zn-2.5Cu-0.4Zr合金,研究了不同成形工艺和热处理工艺对Mg-5Zn-2.5Cu-0.4Zr热物理性能的影响。结果表明,挤压铸造相比于重力铸造对于合金的热导率有小幅提升,从128.22 W/(m·K)提升至130.35 W/(m·K);但热膨胀系数从22.03×10^(-6)K^(-1)升高至23.39×10^(-6)K^(-1)。通过挤压铸造和T1处理共同作用,能够实现热导率和热膨胀性能的同步优化,热导率提高至134.16 W/(m·K),热膨胀系数下降至21.08×10^(-6)K^(-1)。
The Mg-5Zn-2.5Cu-0.4Zr alloy was produced by gravity casting and squeeze casting,and the effects of different forming processes and heat treatment processes on the thermophysical properties of the Mg-5Zn-2.5Cu-0.4Zr were investigated.The results showed that the thermal conductivity of the alloy produced by the squeeze casting was higher compared to that of the alloy produced by the gravity casting,which increased from 128.22 W/(m·K)to 130.35 W/(m·K).However,the alloy produced by the squeeze casting had a higher thermal expansion coefficient(22.03×10^(-6)K^(-1))than that by the gravity casting(23.39×10^(-6)K^(-1)).Through combined application of the squeeze casting and T1 treatment,the simultaneous optimization of the thermal conductivity and thermal expansion performance can be realized.The thermal conductivity increased to 134.16 W/(m·K),and the thermal expansion coefficient reduced to 21.08×10^(-6)K^(-1).
作者
陈露
李建鹏
吴树森
吕书林
郭威
CHEN Lu;LI Jian-peng;WU Shu-sen;L Shu-lin;GUO Wei(State Key Lab of Materials Processing and Die&Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430000,Hubei,China)
出处
《铸造》
CAS
北大核心
2022年第1期17-21,共5页
Foundry
基金
国家自然科学基金(51771080)。
关键词
挤压铸造
热处理
热导率
热膨胀系数
Mg-Zn-Cu合金
squeeze casting
heat treatment
thermal conductivity
thermal expansion coefficient
Mg-Zn-Cu alloy
作者简介
陈露(1998-),男,博士生,主要研究方向为高导热低膨胀镁合金及复合材料的设计和制备。E-mail:D202080382@hust.edu.cn;通讯作者:吴树森,男,教授。E-mail:ssw636@hust.edu.cn。
