滚压对碳钢微动磨损性能的影响  

Effect of burnishing on fretting wear behaviors of carbon steel

作　　者：屈盛官[1] 和锐亮 王光宏[1] 付志强[2] 李小强[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]中国地质大学(北京)工程技术学院,北京100083

出　　处：《中南大学学报（自然科学版）》2017年第4期896-902,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(41572362;51375466;51275494)~~

摘　　要：为了提高碳钢的微动磨损特性,采用不同参数的滚压工艺对45号钢试样进行表面处理,通过表面形貌测量仪、维氏显微硬度计和扫描电镜(SEM)考察在不同参数下,滚压工艺对钢的表面粗糙度、显微硬度、硬化层的厚度等的影响,然后在SRV IV摩擦磨损试验机上对比研究各工艺处理试样的微动磨损特性。研究结果表明:滚压工艺使试样表面形成一定厚度的硬化层,可以降低试样表面的粗糙度,提高表层显微硬度;滚压工艺使试样的磨损量和摩擦因数显著减小;未处理试样的磨损形式主要为黏着磨损和疲劳磨损,滚压后试样以磨粒磨损为主,并伴随轻微的疲劳剥落;不同的滚压参数对45号钢表面性能和微动性能影响较大,滚压工艺使45号钢试样的抗微动磨损性能更加优异。In order to improve fretting wear properties of the carbon steel, the burnishing processes with different parameters were introduced to the surface treatment of 1045 steel specimens. The surface roughness, microhardness and the thickness of hardening layer treated by different burnishing processes were evaluated using surface topography device, vickers microhardness tester and scanning electronic microscopy （SEM）. In addition, the fretting wear characteristics of samples with different burnishing parameters were investigated using SRV Ⅳ tester. The results show that thick hardening layer is generated on the surface of the steel samples by burnishing process. The surface roughness reduces and the microhardness increases significantly. The friction coefficient and wear loss are decreased obviously after burnishing process. Moreover, the wear mechanisms of untreated specimens are mainly adhesive wear and fatigue wear, whereas the treated specimens are mainly damaged by abrasive wear accompanied with slight fatigue spalling. The burnishing parameters have an obvious effect on steel surface properties and fretting wear characteristics. And the burnished 1045 steel specimens have better wear resistance.

关 键 词：滚压 微动磨损 碳钢 磨损机理 

分 类 号：TG176[金属学及工艺—金属表面处理] TG506.2[金属学及工艺—金属学]