摘要
采用正交试验设计法研究了固溶时间、时效温度和时效时间三因素对Mg-5. 0Sm-0. 6Zn-0. 5Zr(质量分数,%)合金组织、散热性能和力学性能的影响及其显著性。结果表明,各因素对合金组织影响的主次顺序为固溶时间>时效温度>时效时间,对合金散热性能影响的主次顺序为时效时间>时效温度>固溶时间,对合金力学性能影响最显著的为时效温度,固溶时间和时效时间影响相对较弱。采用固溶温度520℃、固溶时间4 h,时效温度180℃、时效时间40 h的热处理工艺能使合金获得较好的散热性能。采用固溶温度520℃、固溶时间8h,时效温度200℃、时效时间10 h的热处理工艺能使合金获得较好的力学性能。而采用固溶温度520℃、固溶时间4 h,时效温度200℃、时效时间40 h时,合金可以获得较好的综合性能。
Based on the orthogonal design and analysis method,the effect of solution time,aging temperature and time on the microstructure,heat dissipation performance and mechanical properties of Mg-5.0Sm-0.6Zn-0.5Zr alloy(mass fraction,%)were investigated.Results showed that the order of influence factors on the microstructure of alloys was:solution time>aging temperature>aging time;the order of the influence factors on the heat dissipation performance was:aging time>aging temperature>solution time;the aging temperature was the most significant influence factor on the mechanical properties of alloys and the effect of solution time and aging time were relatively weak.Also,results demonstrated that the alloy obtained better heat dissipation performance after being solution treated at 520℃for 4 h and aged at 180℃for 40 h.The alloy obtained better mechanical properties after being solution treated at 520℃for 8 h and aged at 200℃for 10 h.The alloy obtained better comprehensive performance after being solution treated at 520℃for 4 h and aged at 200℃for 40 h.
作者
张书强
胡玲飞
姜廉瑜
吴广新
张捷宇
Zhang Shuqiang;Hu Lingfei;Jiang Lianyu;Wu Guangxin;Zhang Jieyu(State Key Laboratory of Advanced Special Steel&Shanghai Key Laboratory of Advanced Ferrometallurgy&School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China)
出处
《上海金属》
CAS
北大核心
2018年第5期71-77,共7页
Shanghai Metals
