Influence of alloy composition on wear behavior of high-Cr white cast irons for chute linings

Abstract This study compares the wear resistance of three experimental high-chromium white cast iron (HCWCI) alloys with varying chromium content (20.2–24.5 wt%) and carbide morphologies for mining applications. HCWCIs are valued for their high hardness and toughness, making them suitable for abrasive and impact wear conditions. Wear performance was evaluated using slurry rubber wheel abrasion, pin-on-disc sliding, and solid particle erosion tests. Results showed that wear resistance depended heavily on the morphology of Cr-rich primary carbides. The alloy with 22.2 wt% Cr exhibited strong resistance in slurry abrasion and sliding wear but performed poorly in erosion tests, attributed to its carbide size and shape. This work underscores the importance of carbide morphology in tailoring HCWCI alloys for specific wear environments, highlighting their potential as durable protective liners in mining ope0ns.