腐蚀条件下以锰代镍低碳高合金钢的冲击磨损性能及机制  

Impact Wear Characteristics and Mechanism of Low Carbon High Alloy Replaced Nickel With Manganese Under Corrosive Condition

作　　者：王家庆[1] 杜晓东[1] 丁厚福[1] 王凯[1] 孙国栋[1] 满达虎[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《钢铁研究学报》2007年第9期50-53,58,共5页Journal of Iron and Steel Research

基　　金：教育部博士点基金资助项目(20040359004)

摘　　要：利用改造的MLD-10型冲击磨损实验机,在铁矿石酸性矿浆中,冲击功分别为0.7 J,1.2 J,1.7 J条件下,研究了锰的质量分数为2%的以锰代镍低碳高合金钢的冲击腐蚀磨损行为。通过对试样表面磨损形貌的扫描电镜观察和垂直于磨损表面的亚表层的光学金相分析可知,随冲击功的加大,该钢的冲击腐蚀磨损机制由单一的冲击载荷下的显微切削机制逐渐转变为腐蚀条件下的微观冲击剥落机制,最终演化为疲劳腐蚀磨损机制。For three different impact energies （0. 7 J, 1. 2 J, 1. 7 J）, low carbon high alloy steel replaced nickel with manganese （ωMn= 2 %） were tested with a modified MLD-10 wear tester to investigate their behavior of corrosive impact abrasion, Through the SEM observation of the worn surface and the subsurface optical metallographic analysis of the sample, with of increasing the impact energy, the impact corrosion and abrasion mechanism of low carbon high alloy steel replaced nickel with manganese is transformed from single micro-cutting under corrosive condition to impact-flaking, and at last changed into the fatigue corrosion and spalling mechanism.

关 键 词：低碳高合金钢 锰 镍 冲击腐蚀磨损 表面磨损形貌 

分 类 号：TG115.5[金属学及工艺—物理冶金]