稀土Ce对HMn64-8-5-1.5黄铜组织和磨损性能的影响  

Influence of Ce on Microstructure and Tribological Properties of HMn64-8-5-1.5 Brass

作　　者：王子文[1] 陈少华[2] 李艳锋[1] 黄国杰[1] 解浩峰[1] 彭丽军[1] 米绪军[1] WANG Ziwen CHEN Shaohua LI Yanfeng HUANG Guojie XIE Haofeng PENG Lijun MI Xujun(State Key Laboratory of Nonferrous Metals ＆ Process, General Research Institute for Nonferrous Metals, Beijing 100088, China Aluminum Corporation of China Limited, Beijing 100082, China)

机构地区：[1]北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京100088 [2]中国铝业股份有限公司,北京100082

出　　处：《摩擦学学报》2016年第5期606-613,共8页Tribology

摘　　要：研究了稀土Ce元素对HMn64-8-5-1.5黄铜的组织和室温力学性能以及摩擦学性能的影响。结果表明:添加少量Ce对锰黄铜的物相构成影响较小,因此合金的力学性能变化范围较小。随着合金中Ce质量分数的增加,锰黄铜基体β相和硬质相的晶粒尺寸逐渐减小,而且硬质相的分布更加均匀弥散,材料的组织结构得到改善,从而提高材料的耐磨损性能。添加质量分数0.25%的Ce,材料的磨损速率减少约19%。在相同工况的干摩擦条件下,随着Ce质量分数的增加,HMn64-8-5-1.5黄铜的主要磨损形式逐步从较严重的疲劳剥层磨损和黏着磨损过渡为轻微的黏着磨损和氧化磨损。The rare earths are important modifier for copper alloy. The effect of Ce on microstructure, mechanical properties and wear resistance of HMn64-8-5-1.5 brass were investigated. Addition of 0.05% and 0.1% Ce had insignificant effect on phase component as well as mechanical properties. The refinement of D-phase grain and smaller and homogeneously distributed hard particles were found with addition amount of Ce from 0.15% to 0.25%. The wear-resistance was also improved and the wear rate of alloy with 0.25% Ce was reduced by 19% using HMn64-8-5-1.5 brass as baseline. The wear mechanism of HMn64-8-5-1.5 brass was fatigue delamination and adhesive wear while alloy with addition of Ce was mild adhesive and oxidation wear.

关 键 词：HMn64-8-5-1.5黄铜 稀土Ce 硬质相 细化晶粒 耐磨损性能 

分 类 号：TG146[一般工业技术—材料科学与工程]