Evolution of thermally induced white etching layer at rail surface during multiple wheel/train passages
Publication Name
International Journal of Fatigue
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.
Open Access Status
This publication is not available as open access
Volume
159
Article Number
106799
Funding Number
11790281
Funding Sponsor
National Natural Science Foundation of China