锰黄铜滚压强化及综合性能研究  

Rolling strengthening and comprehensive properties of manganese brass

作　　者：赵国华 吕志甲 杨文灏 王钰鹏 鲍明东 ZHAO Guohua;LU Zhijia;YANG Wenhao;WANG Yupeng;BAO Mingdong(School of Material Science and Engineering,Chang'an University,Xi'an 710061,China;School of Material and Chemistry,Ningbo University of Technology,Ningbo 315211,China)

机构地区：[1]长安大学材料科学与工程学院,陕西西安710061 [2]宁波工程学院材化学院,浙江宁波315211

出　　处：《兵器材料科学与工程》2020年第6期74-78,共5页Ordnance Material Science and Engineering

基　　金：宁波市“科技创新2025”重大专项(2018B10066)。

摘　　要：用机械滚压对铸态锰黄铜合金进行表面处理,研究并分析滚压前后试样的表面形貌、显微组织、硬度及摩擦磨损性能。结果表明:铸态锰黄铜经滚压强化后,晶粒严重变形;粗糙度降低70%;表层显微硬度最高为275HV0.1,比铸态原试样提高65%,硬化层深度为180μm;在油润滑条件下,滚压试样在低载荷(50 N和75 N)时,摩擦因数明显降低且稳定,磨损率比原试样降低2倍以上。经滚压强化后,试样表面综合性能明显提升。The surface treatment of as-cast manganese brass alloy was carried out by mechanical rolling,and the surface morphology,microstructure,hardness and friction and wear properties of the samples before and after rolling were studied and analyzed.The results show that the surface roughness of as-cast manganese brass is improved nearly three times after rolling.The grains are seriously deformed.The surface microhardness is 275 HV0.1,which is 65%higher than the original as-cast sample,and the depth of the affected layer is 180μm.Under the condition of oil lubrication,the friction coefficient of the rolling specimen is obviously reduced and stable at low load(50 N and 75 N),and the wear rate is more than 2 times lower than that of the original specimen.The surface comprehensive properties of the rolled samples are improved obviously.

关 键 词：锰黄铜 滚压强化 显微组织 硬度 摩擦磨损 

分 类 号：TG306[金属学及工艺—金属压力加工]