What is it about?
Surface integrity accounts a lot for the parts working in a contact pair. The contact size reduces to a micro-meter length-scale for practical contact pair given rise by surface roughness. It used to be difficult to understand the micro-scale damage under friction, but we manage to demonstrate the critical role of microstructure and length-scale in the damage evolution using an advanced modelling framework.
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Photo by Sandeep Singh on Unsplash
Why is it important?
We show the mechanisms of surface integrity failure to be the dislocation pattens developing under frictional loading, which is governed by the contact size. As a result, a damage map has been proposed to facilitate engineers to assess the performance of and tailor materials according to in-service scenarios.
Perspectives
We wish this article could contribute to both contact mechanics and tribolpogy engineers, and eventually to reduce the energy we consumpt and build a greener world.
Yilun Xu
Imperial College London
Read the Original
This page is a summary of: On the origin of plasticity-induced microstructure change under sliding contacts, Friction, July 2022, Tsinghua University Press,
DOI: 10.1007/s40544-022-0624-7.
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