氮合金化堆焊硬面合金组织与耐高温磨损性能  

Microstructure and high-temperature wear-resistance of nitrogen-alloying hardfacing alloy

作　　者：杨可[1,2] 余圣甫[3] 杨华 

机构地区：[1]河海大学机电工程学院,江苏常州213022 [2]江苏科技大学先进焊接技术省级重点实验室,江苏镇江212003 [3]华中科技大学材料科学与工程学院,武汉430074 [4]上海纪好旺造船科技发展有限公司,上海200136

出　　处：《焊接学报》2011年第1期5-8,113,共4页Transactions of The China Welding Institution

基　　金：高校基本科研业务专项资金资助项目(2009B30214);江苏科技大学先进焊接技术省级重点实验室开放研究基金资助项目

摘　　要：对马氏体不锈钢堆焊硬面合金进行了氮合金化,研究了其组织和耐高温磨损性能.结果表明,氮合金化马氏体不锈钢堆焊层显微组织主要为马氏体和铌、钛的复合碳氮化物;堆焊马氏体不锈钢硬面合金与碳钢的高温金属间磨损,为碳钢表面高温下形成的氧化皮,粘着于堆焊马氏体不锈钢硬面合金表面,导致堆焊马氏体不锈钢硬面合金产生磨粒磨损.氮合金化堆焊马氏体不锈钢硬面合金铌、钛复合碳氮化物弥散析出,能提高硬面合金的高温硬度值和耐高温磨损性能.The hardfacing alloy of martensitic stainless steel added nitrogen as alloying element was made,and the microstructure and high-temperature wear-resistance was also studied.It is found that the hardfacing alloy has two main phases of martensite and carbonitrides.The high-temperature wear mechanism between hardfacing alloy of the martensitic stainless steels and the low-carbon steel was abrasive wear because the effect of oxide formation on the surface of the low-carbon steel.The oxide was sticking on the surface of hardfacing alloys and increasing the abrasive wear damage.The results showed that carbonitride particles distributed homogeneously in the hardfacing alloy and had a good strengthening effect on the hardness and high-temperature wear resistance.

关 键 词：马氏体不锈钢 硬面合金 碳氮化物 高温磨损 

分 类 号：TG422.3[金属学及工艺—焊接]