【作者】 姚三九； 王兆昌；

【Author】 YAOSan-jiu, WANG Zhao-chang(Material School, Wuhan Automotive Polytechnic University, Wuhan 430070, Hubei, China; Material School, University of Science and Technology Beijing, Beijing 100083, China)

【机构】 武汉汽车工业大学材料学院； 北京科技大学材料学院；

【摘要】 研究了在不同磨损工况中残余奥氏体(γR)对中锰白口铸铁抗磨性的影响。结果表明,冰冷处理是仅改变显微组织中γR和马氏体量的可靠工艺。随显微组织中γR量的减少,材料的低应力磨损和动载磨损的抗磨性提高。在高应力磨损和衬板模拟磨损工况中,γR=30％时,材料的抗磨性最好。更多还原

【Abstract】 In different wear situations , the effect of residual austenite (γR) on abrasion resistance of medium manganese white cast iron was investigated. The results have shown that cryogenic treatment is a reliable technology to change only amount of γR and martensite in microstructure. Decreasing amount of γR, abrasion resistance of the material to wear under the low stress and moving load increases. To the high stress wear and the simulated wear of lining plate, abrasion resistance of the material is the best at γR = 30%.更多还原