摘要
为了提高焊缝的力学性能,在低碳钢表面堆焊Fe5合金粉末时,外加纵向间歇交变磁场,研究分析了纵向间歇交变磁场对等离子弧堆焊层金属组织及性能的影响,利用光学金相、x-射线衍射、显微硬度和湿砂橡胶轮磨损试验等检测方法,对不同磁场参数下的等离子弧堆焊试样的硬度、耐磨性及其组织和性能进行了测试分析.分析研究发现,在适当的磁场参数作用下,增加堆焊层金属中硬质相的数量,并控制硬质相的生长方向,可提高等离子弧堆焊层的硬度和耐磨性.结果表明,外加磁场可以改善堆焊层金属的结晶形态,细化晶粒.
In order to improve the mechanical properties of welding seam, the longitudinal intermittent alternative magnetic field was applied with surfacing Fe5 alloy powder on low carbon steel. The influence of longitudinal intermittent alternative magnetic field on microstructure and properties of plasma arc surfacing layer was studied. The microstructure, hardness and wear resistance of surfacing layers obtained with different magnetic field parameters were analyzed using optical microscope, micro-hardness tester and wear tester. The results indicate that with the proper magnetic field parameters, the amount of hardening phase in the surfacing layer increases, the growth direction of the hardening phase can be controlled, and the hardness and wear resistance of the surfacing layer get improved.
出处
《沈阳工业大学学报》
EI
CAS
2009年第2期159-162,共4页
Journal of Shenyang University of Technology
基金
辽宁省自然科学基金资助项目(20042025)
关键词
等离子弧
堆焊金属
纵向间歇交变磁场
微观组织
耐磨性
plasma arc
surfacing deposit
longitudinal intermittent alternative magnetic field
microstructure
wear resistance
