Heat Treatment of Metals ›› 2023, Vol. 48 ›› Issue (7): 283-286.DOI: 10.13251/j.issn.0254-6051.2023.07.047

• TEST AND ANALYSIS • Previous Articles     Next Articles

Strengthening and toughening mechanism of railway locomotive wheel

Jia Tuosheng1,2, Liu Cuirong1, Zhang Xiaofeng2, Wei Huacheng2, Zhang Lei2, Gao Kang2   

  1. 1. Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China;
    2. Taiyuan Heavy Industry Railway Transit Equipment Co., Ltd., Taiyuan Shanxi 030024, China
  • Received:2022-11-21 Revised:2023-04-13 Online:2023-07-25 Published:2023-09-04

Abstract: Effect of minor added alloying elements on improving the strength and hardness of railway wheel steel was studied by means of mechanical properties test and inclusions and microstructure analysis. The results show that the strength and hardness of the tested steel are high, but the impact property is poor, which cannot meet the standard requirements. The addition of alloying elements causes the formation of a large number of composite inclusions in the steel, which has an adverse effect on the toughness of the wheel. In addition, a small amount of abnormal microstructure in the wheel caused by the segregation of the microalloying elements may also have an adverse effect on the toughness of the wheel.

Key words: locomotive wheel, strengthening and toughening, mechanism, technology

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