Unveiling the mechanical properties of near-surface microstructures in tribological contacts via in-situ micro-bending tests

This study demonstrates the application of the in-situ V-notched micro-cantilever bending method in tribology by analyzing three distinct cases of near-surface microstructures occurring in common tribological contacts. The brown etching layer region of a rail wheel from service shows predominant pla...

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Bibliographic Details
Published in:Tribology international 2024-03, Vol.191, p.109190, Article 109190
Main Authors: Freisinger, Matthias, Rodríguez Ripoll, Manel, Hahn, Rainer
Format: Article
Language:English
Subjects:
Micro-bending
Near-surface microstructure
Roller bearing
Self-lubricating cladding
Wheel-rail contact
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Summary:This study demonstrates the application of the in-situ V-notched micro-cantilever bending method in tribology by analyzing three distinct cases of near-surface microstructures occurring in common tribological contacts. The brown etching layer region of a rail wheel from service shows predominant plastic material behavior. Significant variations in material response and crack initiation are revealed in distinctive regions of a roller bearing's near-surface microstructure and a self-lubricating laser cladding. Qualitative analysis and stress-displacement graphs highlight the method's potential for gaining high-resolution insights into material behavior, contributing to our understanding of microstructural changes affecting friction, wear, and component failure in tribosystems.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2023.109190