预腐蚀对ER8车轮钢磨损行为的影响

doi:10.11896/cldb.18100109

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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.

Key words： ER8 wheel steel salt spray corrosion corrosion performance pre-corrosion wear performance peeling wear

Published: 28 October 2019

CLC number:	TG171
	TG115.5+8

Fund:This work was financially supported by the National Key R & D Program of China (2016YFB1200505-006) and China Railway Corporation’s Techno-logy Research and Development Plan (2016J007-H).

About author:: Wei Zeng received his B.E. degree in materials science and engineering from Chengdu University of Technology in 2016. Currently studying for a master’s degree at Southwest Jiaotong University. His current research content is the key component materials for high-speed EMUs. Participated in research projects with ER8 high-speed wheel organization non-uniformity study; Tang car active high-speed wheel hardness non-uniformity study; based on material wheelset damage tole-rance research; CRH380BG5689 wheel damage detection and damage mec-hanism analysis; long passenger wheel axle damage tolerance research;Jing Han obtained his Ph.D. degree from the Chongqing University. In the same year, he worked in the School of Materials Science and Engineering of Southwest Jiaotong University. At the same time, he worked on the micro-crack control of micro-alloy steel continuous casting billet at the post-doctoral station of metallurgical engineering of Chongqing University. He has published more than 20 academic papers in domestic and foreign journals, including 5 SCI searches and 5 EI searches. Currently engaged in projects with high-speed train key mate-rials and component reliability (technical support project); high-speed EMU key parts localization research and development (Sichuan Science and Technology Department project); high-speed EMU aluminum alloy traction beam localization development; high-speed EMU steering the localization of the putter; the static strength of the loading excavator, the calculation of the fatigue strength, the dynamic load test; the performance evaluation and inspection of the key components of the bogie of the 380-kilometer high-altitude EMU.

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Cite this article:

ZENG Wei,WANG Shaojie,HAN Jing, et al. Effect of Pre-corrosion on Wear Behavior of ER8 Wheel Steel[J]. Materials Reports, 2019, 33(24): 4152-4156.

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http://www.mater-rep.com/EN/10.11896/cldb.18100109 OR http://www.mater-rep.com/EN/Y2019/V33/I24/4152

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