叶导轮用低镍奥氏体铸铁组织和性能的研究  

Study on Microstructure and Properties of Low-Ni Austenitic Cast Iron Used in Impeller

作　　者：张太平[1] 熊计[1] 王艳芬[1] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065

出　　处：《热加工工艺》2011年第5期20-22,26,共4页Hot Working Technology

摘　　要：研究了低镍奥氏体铸铁的显微组织及其耐腐蚀、耐磨性。结果表明:低镍奥氏体组织主要由奥氏体、石墨和少量碳化物组成。低镍奥氏体铸铁的抗拉强度和布氏硬度均高于高镍铸铁,同时,低镍奥氏体铸铁的耐腐蚀和耐磨损性也相当或接近于高镍铸铁。The microstructure,wear resistance and corrosion resistance of low-Ni austenitic cast iron were investigated.The results show that the microstructure of low-Ni cast iron is mainly composed of austenitic matrix,graphite and a small amout of carbides.The hardness and tensile strength of low-Ni cast iron are higher than those of high nickel cast iron.At the same time,the wear resistance and corrosion resistance of the cast iron is similar or closed to high-Ni austenitic cast iron.

关 键 词：镍铸铁 奥氏体 磨损 腐蚀 

分 类 号：TG143.9[一般工业技术—材料科学与工程]