对偶环粗糙度对铋青铜磨损的影响

doi:10.11901/1005.3093.2020.551

材料研究学报

2021, Vol. 35

Issue (10): 732-740 DOI: 10.11901/1005.3093.2020.551

研究论文

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对偶环粗糙度对铋青铜磨损的影响

杨东亚¹, 李伟涛¹, 王宏刚²(

), 高贵¹^,², 陈生圣², 任俊芳², 田松¹

^1.兰州理工大学机电工程学院兰州 730050
^2.中国科学院兰州化学物理研究所固体润滑国家重点实验室兰州 730000

Effect of Counterpart Ring Surface Roughness on Wear Process of Bismuth Bronze

YANG Dongya¹, LI Weitao¹, WANG Honggang²(

), GAO Gui¹^,², CHENG Shengsheng², REN Junfang², TIAN Song¹

^1.School of Mechanical and Electrical Eng. , Lanzhou Univ. of Technol. , Lanzhou 730050, China
^2.State Key Lab. of Solid Lubrication Lanzhou Inst. of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

引用本文:

杨东亚, 李伟涛, 王宏刚, 高贵, 陈生圣, 任俊芳, 田松. 对偶环粗糙度对铋青铜磨损的影响[J]. 材料研究学报, 2021, 35(10): 732-740.
Dongya YANG, Weitao LI, Honggang WANG, Gui GAO, Shengsheng CHENG, Junfang REN, Song TIAN. Effect of Counterpart Ring Surface Roughness on Wear Process of Bismuth Bronze[J]. Chinese Journal of Materials Research, 2021, 35(10): 732-740.

全文: PDF(21911 KB) HTML

摘要:

使用MRH-3环-块摩擦磨损实验机研究了油润滑条件下对偶钢环(GCr15)表面的粗糙度对铋青铜(CuSn10Bi3)磨损的影响。对不同磨损阶段的摩擦表面进行扫描电子显微镜(SEM)和三维轮廓表征、分析了油液粒径并对微凸体摩擦过程进行数值模拟，将实验与仿真相结合从微观角度揭示了CuSn10Bi3的磨损机理。结果表明：对偶环表面的粗糙度对铋青铜的磨损过程有显著的影响。对偶环粗糙度Ra从0.01提高到0.8时摩擦学性能的各项指标约增大2倍，全程产生的磨屑尺寸增大1.5倍，磨合磨损阶段和剧烈磨损阶段经历的时间增长0.7倍，稳定磨损阶段经历的时间缩短0.4倍。

关键词 ：金属材料, 铋青铜, 对偶环粗糙度, 磨损机理, 数值模拟

Abstract：

The effect of surface roughness of steel ring (GCr15) as a counterpart of the friction pair on the wear of bismuth bronze (CuSn10Bi3) under oil lubrication condition was investigated by MRH-3 ring-block friction and wear tester. While the friction surfaces at different wear stages were characterized by means of scanning electron microscopy (SEM) and three-dimensional profiler. The oil particle size was analyzed and the friction process of the micro-convex body was numerically simulated, and the wear mechanism of CuSn10Bi3 was revealed from the microscopic point of view by combining experiment and simulation. The results show that: The roughness of the steel ring surface has a significant effect on the wear process of bismuth bronze. When the roughness of the steel ring Ra increases from 0.01 to 0.8, the tribological performance indexes increase by about 2 times, the size of the wear debris generated in the whole process increases by 1.5 times, the time experienced in the running-in wear stage and the severe wear stage increases by 0.7 times, and the time experienced in the stable wear stage decreases by 0.4 times.

Key words： metal material Bi bronze roughness of dual ring wear mechanism numerical simulation

收稿日期: 2020-12-22

ZTFLH:

TH142.2

基金资助:国家自然科学基金(51675509)

作者简介: 杨东亚，男，1977年生，副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.551 或 https://www.cjmr.org/CN/Y2021/V35/I10/732

图1 铋青铜的烧结工艺

表1 CuSn10Bi3力学性能

图2 CuSn10Bi3试样的元素分布

图3 实验机的原理

图4 表面粗糙度对CuSn10Bi摩擦学性能的影响

图5 粒径的分布

表2 各阶段磨粒的最大直径

图6 有限元仿真的结果

表3 三组仿真数据和结果

图7 实验1对偶环和对偶块的表面形貌

图8 实验2对偶环和对偶块表面的形貌

图9 实验2第III阶段对偶块磨痕表面元素的分布

图10 实验3对偶环和对偶块表面的形貌

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