Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 295, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.127161
Keywords
In-situ reaction; (Ti&W)C; Microstructure; Composites; Wear mechanism
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The effect of in-situ (Ti&W)C multiphase particles on the microstructure and three-body abrasive wear behavior of high chromium cast iron was investigated in this study. The different W/Ti ratios in the preforms resulted in significant differences in the microstructure and properties of the composites. The composite with a W/Ti ratio of 4/6 (M3) showed the best microstructure and wear resistance.
In this paper, the effect of in-situ (Ti&W)C multiphase particles on the microstructure and the three-body abrasive wear behavior of high chromium cast iron was investigated. The results reveal that the different W/ Ti ratios in the preforms can lead to significant differences in the microstructure and properties of the com-posites. The best microstructure and wear resistance of the composite (M3) is achieved when the W/Ti ratio is 4/ 6. Under the same wear conditions, the wear resistance of the M3 composite is more than twice as high as that of the matrix material. Furthermore, the presence of (Ti&W)C multiphase particles in the microstructure improves the hardness of high chromium cast iron, promoting its transition from cutting, fatigue, and the M7C3 fracture -exfoliation wear mechanism in the abrasive wear to micro-cutting and fatigue wear.
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