纵向磁场参数对LD10CS铝合金TIG焊焊缝组织的影响

Optimization of Magnetic Parameters for Grain Structure Refinement of LD10CS Aluminum Alloy Weldment

通过对外加间歇交变纵向磁场作用下ＬＤ１０ＣＳ铝合金ＨｅＴＩＧ焊缝组织的分析，发现磁场参数中磁感应强度Ｂ、磁场交变频率ｆ和磁场断通比Ｑ对焊缝组织细化效果影响很大．磁感应强度Ｂ与磁场交变频率ｆ不能单独选择，必须恰当匹配，同时还必须与焊接规范参数相适应，才能获得最佳细化效果．给出了试验条件下最佳的磁场参数．研究结果对磁控电弧焊接技术的应用具有重要的指导意义．

Metallographic examination of LD10CS aluminum alloy weldment using He TIG(Tungsten Inert Gas) with logitudinal intermittent alternative magnetic fields shows that the magnetic induction intensity, the frequency and magnetic ratio of the break to openness can greatly influence the weld grain fefinement. These parameters cannot be chosen independently; they need to be optimized to control grain structure refinement and magnetic property.