Influence of High-Cycle Fatigue on Crater Wear Characteristics of Cemented Carbide Tool

Abstract:

Recently, in order to make positively use of the effect of adhesive layer, which works as Build-up edge or Belag on the tool surface during machining operation, there have many investigations on the technique to reduce the wear of cutting tool. However, the mechanism of wear on the rake face is unknown and the reason why the adhesive layer can resist the abrasion is also unclear.This study aims to propose a new crater high-cycle fatigue wear model depending on the tool adhesion model established by the surface cluster on the interface between the Tool-Work Piece. By using this model we can elucidate the mechanism of adhesive layer. When the chip flows on the rake face, the commensurate phase occurs in the surface cluster on the interface, and the surface cluster slides in the similar form of dislocation. At the same time, the strong chemical bonding among the surface clusters becomes the repeat force which can result in the fatigue failure on the tool, and the tool crater wear happens. The energy dissipation process associates with the vibration of cluster, which increases the tool temperature rapidly. Therefore, the crater wear is a damage process on the tool with the high-temperature and high-cycle fatigue.In this study, the mechanism of crater wear when the cemented carbide cut the carbon steel was investigated using the adhesion cluster model, and the crater wear model was proposed to estimate the properties of the adhesive layer.

• Periodical: Key Engineering Materials (Volume 664)
• Pages: 326-336
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.664.326
• Online since: September 2015
• Authors: Xiao Qi Song*, Junnosuke Saigawa, Tohru Ihara
• Keywords: Adhesive Layer, Commensurate, Crater Wear, High-Cycle Fatigue, Surface Cluster

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