1. The role of oxide-scale microtexture on tribological behaviour in the nanoparticle lubrication of hot rolling.
- Author
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Yu, Xianglong, Jiang, Zhengyi, Zhao, Jingwei, Wei, Dongbin, Zhou, Ji, Zhou, Cunlong, and Huang, Qingxue
- Subjects
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OXIDES , *TRIBOLOGY , *NANOPARTICLES , *HOT rolling , *ELECTRON backscattering , *GRAIN refinement , *COOLING - 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 Fe 3 O 4 were produced at a thickness reduction of 28% and a cooling rate of 28 °C/s. Microtexture development of Fe 3 O 4 manifests as a strong θ fibre parallel to oxide growth, including the {100}<001> and {001}<110> textured components, whereas the {0001}<10 1 ̅ 0> component dominates in α -Fe 2 O 3 as the favoured basal slip. The tribological effect of α -Fe 2 O 3 at the contact surface of steel and rolls was considered at low and high thickness reductions. The propagation of cracks along the Fe 3 O 4 grain boundaries could create a dish to collect nanoparticles during lubrication and thereby changed the wear rates. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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