| 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. |
| 关键词: 马氏体不锈钢 硬面合金 碳氮化物 高温磨损 |
| DOI： |
| 分类号: |
| 基金项目: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 |
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| Microstructure and high-temperature wear-resistance of nitrogen-alloying hardfacing alloy |
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YANG Ke1,2, YU Shengfu3, YANG Hua4
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1.College of Mechanical and Electrical Engineering, Hehai University, Changzhou, Jiangsu 213022, China;2.Province Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212003, China;3.College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;4.Shanghai Jihaowang Shipbuilding Technology Development Co., Ltd, Shanghai 200136, China
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| Abstract: |
| 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. |
| Key words: martensitic stainless steel hardfacing alloy carbonitride high-temperature wear |
