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- W3135447029 abstract "A significant fraction of operational cost in oil sands mining is directly or indirectly related to undercarriage component wear. One of the strategies to minimize the cost is to repair/rebuild the worn components. Recent advancement of welding technology offers an economical way to achieve this goal. Depending on the involved wear mechanisms, the selection of appropriate overlay material can considerably extend the service life of worn undercarriage components. Due to their excellent wear resistance, tungsten carbide based overlays is a unique choice for this purpose. In this study, three WC-based overlays with different carbide types were selected for evaluation. Wear resistance was assessed via low-stress abrasion (ASTM G65 ) and rolling contact abrasion (RCA). RCA tests were conducted with two slip ratios, where 0.3% slip ratio simulates pure rolling/high-stress contact fatigue, and a 3.0% slip combines fatigue and abrasion as observed in undercarriage components. Based on the wear test results, it was found that, despite their good low-stress abrasion resistance, WC-based overlays display high rolling contact abrasion damage and is not suitable for the restoration of undercarriage components. SEM observation on wear scars correlates the wear performance with carbide type and corresponding mechanisms. • Rolling contact abrasion assessment of WC-based overlays. • Effect of carbide type on the wear performance of overlays. • Effect of slip ratio (creepage) during rolling contact. • Low stress and rolling-sliding abrasion mechanisms of tungsten carbide overlays. • Stress distribution and corresponding wear mechanisms in presence of abrasive." @default.
- W3135447029 created "2021-03-15" @default.
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- W3135447029 date "2021-07-01" @default.
- W3135447029 modified "2023-09-24" @default.
- W3135447029 title "Assessment of low-stress and rolling contact abrasion of WC-based overlays for the restoration of undercarriage components" @default.
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- W3135447029 doi "https://doi.org/10.1016/j.wear.2021.203820" @default.
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