【摘要】 在外加纵向磁场下对不锈钢进行氩弧焊,通过对焊接试样进行弯曲和拉伸试验、显微组织观察分析,研究外加磁场频率对焊接接头力学性能的影响。结果表明,外加纵向磁场通过电磁搅拌作用改变晶粒的结晶方向、细化晶粒,在磁场频率为20Hz时,焊接接头的力学性能达到最佳。更多还原

【Abstract】 The magnetic field was applied to weld stainless steel with GTAW. The influence of magnetic frequency on properties of welded joint was studied by bending test,tensile test and SEM. The results show that the orientation of crystal grain is changed and crystal grain is refined by magnetic field. The optimal properties of welded joint appears when magnetic field frequency is 20Hz.更多还原