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- Title
Research on evolution law of material comprehensive performance of S38C steel for high speed railway axle.
- Authors
Wang, Yuguang; Liu, Xiyang; Li, Zhongwen; Xu, Xiaojun; Peng, Jinfang; Zhu, Minhao
- Abstract
In order to understand the evolution law of material comprehensive performance of S38C steel for high speed railway axle, the new axle and other one were characterized after serving 4.3 million kilometers. In this paper, the surface morphology and microstructure were observed and the hardness, tensile properties, residual stress were examined. Results show that fretting fatigue wear happened on the 4.3 million-kilometer axle and the damage of the wheel seat surface was relatively serious. After the high-frequency quenching, a dense martensitic structure was formed on the surface of the axle, which improved the strength and hardness of the axle surface. The surface hardness and cross-section hardness distribution of the two axles were basically consistent. There was little difference in tensile mechanical performance of the two axles. But, the tensile mechanical property of the material in the surface quenching zone was much higher than that of the central matrix material. After the axle was serviced for 4.3 million kilometers, the residual stress both on the surface and in the cross-section at the wheel seat increased.
- Subjects
TOOL-steel; MECHANICAL behavior of materials; FRETTING corrosion; MARTENSITIC structure; LEGAL research; BALLAST (Railroads); AUTOMOBILE axles
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2019, Vol 33, Issue 1-3, pN.PAG
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979219400125