EFFECT OF IMPACT ON WEAR RESISTANCE OF HIGH CHROMIUM CAST IRON AND AUSTENITIC STAINLESS STEEL
XU Genhua SHEN Wanci LIU Yingjie (Tsinghua University)
Effect of impact on wear resistance of high chromium cast iron and austenitic stainless steel has been studied by ball-on-ball impact and pin-on-disc abrasion test. For martensitic high chromium cast iron, whether pre-impact or after impact, the metal mold cast one has better wear resistance than the sand mold cast one. After impact the wear resistance of the metal mold cast one is decreased a little while the wear resistance of the sand mold cast one is almost not change 30.8% of residual austenite in high chromium cast iron is beneficial to wear resistance. Impact-induced deformation and phase transformation have even larger beneficial effects. For austenitic high chromium cast iron, impact largely improves its wear resistance, while for austenitic stainless steel, impact largely decreases its wear resistance.
【CateGory Index】： TG142.15