Effect of Alloying Elements on Thermal Wear of Cast Hot��Forging Die Steels
WANG Shu��qi1,CHEN Kang��min1,CUI Xiang��hong2,JIANG Qi��chuan2,HONG Bian1
1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China; 2. School of Materials Science and Engineering, Jilin University, Changchun 130025, Jilin, China
Effect of Alloying Elements on Thermal Wear of Cast Hot��Forging Die Steels
WANG Shu��qi1,CHEN Kang��min1,CUI Xiang��hong2,JIANG Qi��chuan2,HONG Bian1
1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China; 2. School of Materials Science and Engineering, Jilin University, Changchun 130025, Jilin, China
ժҪ The effect of main alloying elements on thermal wear of cast hot��forging die steels was studied. The wear mechanism was discussed. The results show that alloying elements have significant influences on the thermal wear of cast hot��forging die steels. The wear rates decrease with an increase in chromium content from 3% to 4% and molybdenum content from 2% to 3%, respectively. With further increase of chromium and molybdenum contents, chromium slightly reduces the wear resistance and molybdenum severely deteriorates the wear resistance with high wear rate. Lower vanadium/carbon ratio (1��5-2��5) leads to a lower wear resistance with higher wear rate. With an increase in vanadium/carbon ratio, the wear resistance of the cast steel substantially increases. When vanadium/carbon ratio is 3, the wear rate reaches the lowest value. The predominant mechanism of thermal wear of cast hot��forging die steels are oxidation wear and fatigue delamination. The Fe2O3 and Fe3O4 or lumps of brittle wear debris are formed on the wear surface.
Abstract��The effect of main alloying elements on thermal wear of cast hot��forging die steels was studied. The wear mechanism was discussed. The results show that alloying elements have significant influences on the thermal wear of cast hot��forging die steels. The wear rates decrease with an increase in chromium content from 3% to 4% and molybdenum content from 2% to 3%, respectively. With further increase of chromium and molybdenum contents, chromium slightly reduces the wear resistance and molybdenum severely deteriorates the wear resistance with high wear rate. Lower vanadium/carbon ratio (1��5-2��5) leads to a lower wear resistance with higher wear rate. With an increase in vanadium/carbon ratio, the wear resistance of the cast steel substantially increases. When vanadium/carbon ratio is 3, the wear rate reaches the lowest value. The predominant mechanism of thermal wear of cast hot��forging die steels are oxidation wear and fatigue delamination. The Fe2O3 and Fe3O4 or lumps of brittle wear debris are formed on the wear surface.
WANG Shu��qi;CHEN Kang��min;CUI Xiang��hong;JIANG Qi��chuan;HONG Bian. Effect of Alloying Elements on Thermal Wear of Cast Hot��Forging Die Steels[J]. �й������ڿ���, 2006, 13(5): 0-53.
WANG Shu��qi;CHEN Kang��min;CUI Xiang��hong;JIANG Qi��chuan;HONG Bian. Effect of Alloying Elements on Thermal Wear of Cast Hot��Forging Die Steels. Chinese Journal of Iron and Steel, 2006, 13(5): 0-53.
2006, Vol. 13 