Title

The role of oxide-scale microtexture on tribological behaviour in the nanoparticle lubrication of hot rolling

RIS ID

103325

Publication Details

Yu, X., Jiang, Z., Zhao, J., Wei, D., Zhou, J., Zhou, C. & Huang, Q. (2016). The role of oxide-scale microtexture on tribological behaviour in the nanoparticle lubrication of hot rolling. Tribology International, 93 190-201.

Abstract

Electron backscatter diffraction (EBSD) of the microtexture in the tertiary oxide scale after hot rolling were investigated. The surface asperity flattening and grain refinement of Fe3O4 were produced at a thickness reduction of 28% and a cooling rate of 28 °C/s. Microtexture development of Fe3O4 manifests as a strong θ fibre parallel to oxide growth, including the {100} and {001} textured components, whereas the {0001}〈101〉0> component dominates in α-Fe2O3 as the favoured basal slip. The tribological effect of α-Fe2O3 at the contact surface of steel and rolls was considered at low and high thickness reductions. The propagation of cracks along the Fe3O4 grain boundaries could create a dish to collect nanoparticles during lubrication and thereby changed the wear rates.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.triboint.2015.08.049