期刊
WEAR
卷 388, 期 -, 页码 101-111出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.wear.2017.05.008
关键词
Abrasive wear; Abrasive particle size; Friction; Microstructure; Hardness; Surface topography
Wear and friction properties depend on many parameters such as normal load and material hardness. However, coupled contributions of microstructure and abrasive particle size are less investigated. A contribution in this field is proposed with wear tests performed between a 35NCD16 steel and abrasive silicon carbide grains ranging from 35 pm to 200 pm under different normal loads (50-110 N). To vary hardness and microstructure, samples are subjected to water quenching and tempering at various temperatures (200-600 degrees C). These heat treatments result in a martensitic microstructure with various levels of carbon contents and carbide precipitations. For a given microstructure and hardness, the friction coefficient decreases with increasing the normal load and/or decreasing the abrasive particle size. However, the wear rate increases with increasing the normal load and/or the abrasive particle size. For high normal loads, the results also reveal that the friction coefficient decreases when the hardness and the martensite volume fraction increase. Nonetheless, for low normal loads, a transitional microstructure from martensite laths to carbides and equiaxed grains, for a tempering around 400 degrees C, impacts the friction coefficient. Whatever the normal load, this transitional microstructure also influences the wear rate.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据