Abstract: The ER8 high-speed wheel steel rim material was subjected to salt spray corrosion, the friction and wear test was carried out on the MMU-5G friction and wear tester. The structure, composition and morphology of the corrosion layer were observed and analyzed by VHX-1000 ultra-depth microscope and XRD. The pre-corrosion wear properties and wear scar morphology were recorded and analyzed. Results show that the corrosion layer of the wheel rim material has two layers, and the average corrosion rate decreases first then increases and then decreases with the extension of corrosion time. The wear forms of the rim material are mainly adhesive wear, abrasive wear and oxidative wear accompanying temperature rise. Pre-corrosion creates a larger size furrow and spalling wear during the wear process by destroying the surface integrity of the rim material and creating a relatively loose corrosion layer.
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2019, Vol. 33 
