固溶/时效处理对家具设计用Mn-Cu合金组织与阻尼性能的影响  

Effects of Solution and Aging Treatment on Microstructure and Damping Property of Mn-Cu Alloy for Furniture Design

作　　者：金晚霞 陈启祥 秦莹 JIN Wanxia;CHEN Qixiang;QIN Ying(School of Industrial Design, Hubei University of Technology, Wuhan 430068, China;Department of Materials Engineering, Wuhan University of Technology, Wuhan 430070, China)

机构地区：[1]湖北工业大学工业设计学院,湖北武汉430068 [2]武汉理工大学材料工程系,湖北武汉430070

出　　处：《热加工工艺》2018年第6期219-222,共4页Hot Working Technology

摘　　要：采用X射线衍射分析仪（XRD）、扫描电子显微镜（SEM）、动态机械热分析仪（DMA）等分析了固溶/时效热处理对家具设计用Mn-Cu合金组织与阻尼性能的影响,得出了较为适宜的热处理工艺,并探讨了显微组织与阻尼性能之间的关系。结果表明：在相同的应变振幅下,固溶/炉冷Mn-Cu合金的阻尼值要高于固溶/水冷Mn-Cu合金的阻尼值,且都小于轧制态Mn-Cu合金的阻尼值;随着时效时间的增加,同一应变振幅下的Mn-Cu合金的阻尼值呈现先增加而后降低的趋势,在时效时间为8h时获得的阻尼值最大;因此,Mn-Cu合金经过时效处理后,并不是时效时间越长阻尼性能越好,Mn-Cu合金适宜的时效保温时间为8h。The effects of solution and aging heat treatment on the microstructure and damping property of Mn-Cu alloy for furniture design were analyzed by using X ray diffraction （XRD）, scanning electron microscopy （SEM） and dynamic mechanical thermal analyzer （DMA）, and a suitable heat treatment process was obtained. The relationship between microstructure and damping property was also discussed. The results show that, the damping value of cold Mn-Cu alloy in solid solution furnace cooling is higher than that of the Mn-Cu alloy in solid solution water cooling state under the same strain amplitude, and the are less than that of the rolled Mn-Cu alloy. With the aging time increasing, the damping value of the Mn-Cu alloy under the same strain amplitude increases first and then decreases, and the maximum value is obtained at the aging time of 8 h. So, the damping value of Mn-Cu alloy after aging treatment is not that the longer the aging time is, the better the damping property is. The suitable aging holding time is 8 h.

关 键 词：固溶 时效 Mn-Cu合金 组织 阻尼性能 

分 类 号：TG156.9[金属学及工艺—热处理] TG145[金属学及工艺—金属学]