锰铜阻尼合金的微观组织与力学性能分析  

Microstructure and Mechanical Properties of Manganese-Copper Damping Alloy

作　　者：谢东辉[1] 蔡凯洪[1] XIE Donghui;CAI Kaihong(Beijing BeiYe Functional Materials Corporation)

机构地区：[1]北京北冶功能材料有限公司

出　　处：《金属材料研究》2019年第4期23-28,36,共7页Research on Metallic Materials

摘　　要：本文对锰含量大于70%的锰铜阻尼合金的微观组织与力学性能进行了分析。合金采用中频感应炉冶炼,对合金锻棒进行了固溶处理和时效处理试验,观察了不同状态合金的微观组织,测试了锻态合金经不同工艺热处理后的力学性能。结果表明:锰铜阻尼合金的铸态、锻态组织成分偏析显著,形成富锰区和富铜区;采用使合金具有阻尼特性的热处理工艺对锻态合金热处理后,具有调幅分解强化效应,且保持较高的室温塑性和韧性。The microstructure and mechanical properties of Manganese-Copper damping alloy with manganese content more than 70% have been studied.The alloy forging rod was smelted in medium frequency induction furnace and the solid solution and aging heat treatment tests were carried out.The microstructure of the alloy under different conditions was observed,and the mechanical properties of as-forged alloys under different heat trcatment processes were tested.The results show that the as-cast and forged structure of Manganese-Copper damping alloy segregates remarkably,forming manganese-rich and copper-rich zones;the heat treatment process which makes the alloy possess damping characteristics has the effect of amplitude-modulated decomposition strengthening after heat treatment,and maintains high room temperature plasticity and ductility.

关 键 词：锰铜合金 微观组织 力学性能 

分 类 号：TG1[金属学及工艺—金属学]