Effect of ambient temperature on the dry sliding wear of Vanadis 4 Extra steel

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Zhang, Junxi^1 ; Yi, Xiangbin^2 ; Liu, Limei^2 ; Shen, Jiancheng^2

School of Material Engineering, Lanzhou Institute of Technology, Gansu Province Lanzhou

730050, China^1

Provincial Key Laboratory for Green Cutting Technology and Application of Gansu Province, Institute of Technology, Gansu Province Lanzhou

730050, China^2

关键词: Abrasive particles;    Delamination wear;    Dry sliding wear;    Energy dispersive spectrometers;    Increasing temperatures;    Pin on disk friction;    Steel substrate;    Wear mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/2/022014/pdf
DOI  :  10.1088/1757-899X/392/2/022014

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A pin-on-disk friction and wear test was conducted to test the critical load for serious dry sliding wear of Vanadis 4 Extra steel at a sliding speed of 0.691 m/s, at room temperature, 200 °C and 400 °C respectively. Using scanning electron microscopy (SEM) and an energy dispersive spectrometer (EDS), the wear surface morphologies, wear mechanism and reasons were analysed. Results show that: with increasing temperature, the critical load for serious wear of Vanadis 4 Extra steel first increased and then decreased. The critical loads leading to serious wear were 900 N and 800 N at room temperature and 400 °C, respectively, while, there was no serious wear at 200 °C at less than 1000 N. There were abrasive particles found under different loads: as the load and temperature increased, the formation of oxide films on the worn surface plays an decisive role in wear: when applying a load smaller than the critical load, oxide films can protect and lubricate the steel substrate, presenting slight oxidative wear; when applying a load greater than the critical load, oxide films on the worn surface were ruptured and spalled, with mainly oxidative delamination wear being observed.