硬度对碳钢微动磨损行为和磨屑组分的影响  

Effect of the Hardness on Fretting Wear Behaviour and Wear Debris Composition of Carbon Steel

作　　者：张绪寿[1] 刘洪[1] 王秀娥[1] 

机构地区：[1]中国科学院兰州化学物理研究所固体润滑开放研究实验室

出　　处：《摩擦学学报》1995年第4期300-305,共6页Tribology

摘　　要：人们已经研究过诸多因素对金属和合金微动磨损行为的影响，但对试样硬度与磨屑组分、微动磨损表面形貌及压实氧化物层的形成之间的关系却还很少有人研究．因此，利用ＳＲＶ微动磨损试验机在室温下于大气中就硬度对４５＃钢微动磨损行为和磨屑组分的影响进行了考察．结果表明，硬度升高一般可以提高碳钢的抗微动磨损性能，但当较软的４５＃钢上试样与较硬的５２１００钢下试样对摩时，前者硬度的增大对其微动磨损行为没有明显的影响．Ｘ射线衍射检测发现，微动磨屑是由Ｆｅ２Ｏ３和单质铁所组成，试样的硬度越高，磨屑的铁含量越低，磨损体积越小．根据Ｘ射线衍射分析和微动磨损试验结果，对微动磨损表面形貌特征、压实氧化物层的形成与微动磨损行为的关系进行了讨论，指出较软试样的微动磨损行为主要决定于磨屑从接触界面排出的速率，后者又取决于由接触状态所决定的微动磨损表面形貌．The influence of various factors on fretting wear behaviour of metals and alloyshas been widely investigated,but few papers are available on the relationship between composition of wear debris,compacted oxide layer formation and the hardness of specimen. The relationship between composition of wear debris,fretted surface morphology,compacted oxidelayer formation and the hardness of carbon steel has been studied,and the morphological cha-racteristics of the fretted surface and the formation of compacted oxide layer are discussed inrelating to the fretting wear behaviour observed.Three series of pairs with different hardnesscombination were tested using the contact configuration of a cylinder specimen and a flat platespecimen on the SRV fretting tester. The results reveal that the fretting wear resistance ofcarbon steel may be greatly increased by enhancing its hardness,However,when upper softercylindrical specimen with different hardness were fretted against lower flat specimen,the hard-ness has little influence on fretting wear of carbon steel.The fretting wear debris consists ofFe2O3 and Fe. The iron content in wear debris is controlled by hardness of the specimen,thehigher hardness,the lower iron content in wear debris and smaller wear volume of the specimen. For the specimen with lower hardness in this test,fretting wear behaviour is mainly governed by the removal rate of oxide particles which depends on the morphological characteristics ofafretted surface.

关 键 词：硬度 碳钢 微动磨损 磨屑组合 金属材料 

分 类 号：TG142.41[一般工业技术—材料科学与工程]