自生碳化物高锰钢堆焊层的组织与力学性能

Microstructure and mechanical properties of high-manganese steel surfacing layer with spontaneous carbide particles

利用药皮中钛铁、钒铁、石墨、稀土等的高温电弧冶金反应在金属堆焊层中自发生成碳化物增强颗粒,以提高堆焊层耐磨性。利用扫描电镜和能谱仪,对金属堆焊层中碳化物颗粒的形貌、分布及成分进行了观察和分析,测量了金属堆焊层的硬度并进行了耐磨性试验。结果表明,随着药皮中钛铁、钒铁的增加,堆焊层硬度提高,当加入12wt%钛铁、12wt%钒铁时,堆焊层硬度为65 HRC,耐磨性最好。

High manganese steel surfacing layer with spontaneous carbide particles was prepared by adding ferrotitanium,ferrovanadium,graphite and rare earth elements in the covering to improve wear resistance.Morphology,distribution and composition of carbides in the surfacing layer were observed and analyzed by SEM and EDAX,and the hardness and wear resistance of the surfacing layers were tested.The results show that the hardness is enhanced with the increase of ferrotitanium and ferrovanadium contents,while the content of ferrotitanium and ferrovanadium are all 12wt%,the hardness is 65 HRC and the wear resistance is the best.