热震对银-铝复合材料组织和性能的影响  

Effect of thermal shock on microstructure and properties of silver coated composites

作　　者：沈晓 李闪光 李晓征 熊鹏 杜书万 Shen Xiao;Li Shanguang;Li Xiaozheng;Xiong Peng;Du Shuwan(Henan Pinggao Electric Co.,Ltd,Pingdingshan 467001,China;Lab of Surface Treatment and Metal Anti-corrosion,Pinggao Group,Pingdingshan 467001,China;Lu Yajuan Innovation Studio,Pinggao Group,Pingdingshan 467001,China)

机构地区：[1]河南平高电气股份有限公司,河南平顶山467001 [2]平高集团表面处理及金属防腐实验室,河南平顶山467001 [3]平高集团路亚娟创新工作室,河南平顶山467001

出　　处：《电镀与精饰》2024年第7期64-68,共5页Plating & Finishing

摘　　要：采用电镀的方法在铝合金表面制备银镀层,对银-铝复合材料试样进行热震试验。利用金相显微镜、显微硬度计研究热震试验对材料形貌及力学性能的影响。结果表明,热震试验保温时间30 min后,相较于未热震试验的硬度无明显变化,随着保温时间的延长,铝基体和银镀层硬度大幅降低;且加热后空冷银镀层的硬度略高于水冷银镀层的硬度;同时,热震试验190℃、30 min后基体晶粒细化,而热震试验190℃、2 h后晶粒有长大趋势。Silver coating was prepared on the surface of aluminum alloy by electroplating.Thermal shock test was carried out on the silver coating composite material.The effect of thermal shock test on the morphology and mechanical properties of the materials was studied by metallographic microscope and microhardness tester.The results show that the hardness of aluminum substrate and silver coating has no obvious change compared with that of non-thermal shock test after 30min.The hardness of aluminum substrate and silver coating decreases significantly with the extension of thermal shock time.The hardness of air-cooled silver coating after heating is slightly higher than that of water-cooled silver coating.At the same time,the matrix grains were refined after 190 ℃ and 30 min of thermal shock test,while the grains showed a tendency to grow after 190 ℃ and 2 h of thermal shock test.

关 键 词：热震试验 银-铝复合材料 力学性能 

分 类 号：TM206[一般工业技术—材料科学与工程]