镍奥氏体铸铁的制备及磨粒磨损性能  

Preparation and Abrasive Wear Behavior of Nickel Austenitic Cast Iron

作　　者：孙兰[1] 刘玉珍[1] 王艳芬 熊计[1] 李长案[1] 

机构地区：[1]四川大学制造学院,四川成都610065 [2]中广核工程有限公司,广东深圳518031

出　　处：《四川大学学报（工程科学版）》2012年第2期164-168,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学青年基金基金资助项目(51101109)

摘　　要：针对高镍奥氏体铸铁成本居高不下的特点,通过加入价格低廉的Mn代替部分昂贵的Ni,并调整Cu、Cr、Si等元素含量,制备低镍奥氏体铸铁,并进行磨粒磨损试验对比研究。结果表明:所制备的低镍铸铁可使基体达到几乎完全的奥氏体组织,且石墨形态和高镍铸铁相近;镍铸铁的力学性能及组织结构成分对材料的耐磨粒磨损性能均有影响,其中硬度和强度越高的镍铸铁,其磨损性能越好;所制备的低镍片状石墨铸铁的耐磨损性能均接近或高于高镍铸铁。Considering the fact that the application of high-nickel austenitic cast iron results in higher cost,a low-nickel austenitic cast iron was prepared by replacing part of Ni element with the element of Mn and simultaneously controlling the ratio of the elements of Cu,Cr,Si,and to compare abrasive wear abrasive of nickel austenitic cast iron.The results showed that the matrix of the prepared low-nickel cast iron can be achieved almost entirely austenite and the graphite morphology is similar to high-nickel cast iron.The mechanical properties,composition and structure of nickel cast iron have influence on the abrasive wear properties.The higher hardness and strength of nickel cast iron,the better the wear performance.The wear resistances of low-nickel flake graphite cast irons are close to or higher than the high-nickel cast iron.

关 键 词：奥氏体 铸铁 MN Ni 磨粒磨损 

分 类 号：TG143[一般工业技术—材料科学与工程]