- 期刊
- OpenAccess
Effect of Carbide Particles on the Behaviour of the Oxide Layer
並列摘要
In this study, an FE simulation was used to simulate the contact established between a High-Speed Steel (HSS) work roll and a hot strip material in hot rolling, in which the top layer and the substrate represented the HSS roll and the tip of the indenter represented a particle from oxide scale formed on the strip steel. As the oxidation behaviour of carbides affects the homogeneity of the oxidised surface of work rolls, this has an important influence on wear and therefore it is instructive to investigate the effect that carbide particles have on the behaviour of the oxide layer. This study focused on the interaction between the carbide and the asperity by an abrasive. The evolution of strain fields during the simulation tests was recorded at room and high temperature. The 3D FE model was able to show the interaction between the indenter and the carbide particle reinforcements of these following scenarios: particles above, along and below the scratch path. The results indicated that the strain at high temperature is higher than at room temperature which leads to a higher sensitivity to failure. Increasing the strain means high probability of particle movement that produces delamination of the layer. The strains for particles on the oxide-substrate interface at both temperatures are higher than the particle in the substrate. The interaction between the tip and the particle significantly influences the strains.