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Evolution of thermally induced white etching layer at rail surface during multiple wheel/train passages

Journal Article


Abstract


  • A thermo-mechanical-phase transformation FEM was developed to quantitatively predict the formation process of thermally-induced white etching layer (WEL) at rail surface. A practical scenario of multiple wheel passages with two locomotives was introduced for a single train, and the evolution of martensitic WEL and the residual stress during ten train passages was reported. The results indicate that an effective heating period during wheel passage is a critical factor to influence WEL formation. For the given model parameters, the maximum volume fraction of martensite increases from 1.8% to 19.78% during the passage of ten trains. The residual stress distribution on the rail top is changed after WEL formation.

Publication Date


  • 2022

Citation


  • Lian, Q., Zhu, H., Deng, G., Wang, X., Li, H., Wang, X., & Liu, Z. (2022). Evolution of thermally induced white etching layer at rail surface during multiple wheel/train passages. International Journal of Fatigue, 159. doi:10.1016/j.ijfatigue.2022.106799

Scopus Eid


  • 2-s2.0-85124796307

Volume


  • 159

Issue


Place Of Publication


Abstract


  • A thermo-mechanical-phase transformation FEM was developed to quantitatively predict the formation process of thermally-induced white etching layer (WEL) at rail surface. A practical scenario of multiple wheel passages with two locomotives was introduced for a single train, and the evolution of martensitic WEL and the residual stress during ten train passages was reported. The results indicate that an effective heating period during wheel passage is a critical factor to influence WEL formation. For the given model parameters, the maximum volume fraction of martensite increases from 1.8% to 19.78% during the passage of ten trains. The residual stress distribution on the rail top is changed after WEL formation.

Publication Date


  • 2022

Citation


  • Lian, Q., Zhu, H., Deng, G., Wang, X., Li, H., Wang, X., & Liu, Z. (2022). Evolution of thermally induced white etching layer at rail surface during multiple wheel/train passages. International Journal of Fatigue, 159. doi:10.1016/j.ijfatigue.2022.106799

Scopus Eid


  • 2-s2.0-85124796307

Volume


  • 159

Issue


Place Of Publication