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

Authors

Xianglong Yu, University of WollongongFollow
Zhengyi Jiang, University of WollongongFollow
Jingwei Zhao, University of WollongongFollow
Dongbin Wei, University of WollongongFollow
Ji Zhou, Tsinghua UniversityFollow
Cunlong Zhou, Taiyuan University of Science and TechnologyFollow
Qingxue Huang, Taiyuan University of Science and Technology

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.