| 外加磁场对AZ31镁合金焊接接头组织性能的影响 |
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| 引用本文： | 苏允海,刘政军,王玉,张桂清.外加磁场对AZ31镁合金焊接接头组织性能的影响[J].热加工工艺,2006(6). |
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| 作者姓名： | 苏允海 刘政军 王玉 张桂清 |
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| 作者单位： | 沈阳工业大学材料科学与工程学院 辽宁沈阳110023(苏允海，刘政军，张桂清)，沈阳市特种设备检测研究院 辽宁沈阳110035(王玉) |
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| 基金项目： | 辽宁省教育厅基础研究基金资助项目(05L298) |
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| 摘 要： | 在对5mm厚的AZ31镁合金板进行GTAW焊接的过程中,外加纵向交流磁场,研究了磁场对焊接接头的力学性能和显微组织的影响,并探讨了磁场的作用机理。结果表明:外加纵向磁场通过旋转电弧对熔池进行搅拌,不仅可以细化晶粒,使焊接接头的抗拉强度、硬度得到改善,还可以净化熔池中液态镁合金(使杂质球化并弥散分布),此外磁场的引入还可降低镁合金焊接热裂纹的敏感性,抑制热裂纹的产生。
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| 关 键 词： | 纵向交流磁场 AZ31镁合金 GTAW焊接 组织性能 |
Effect of Longitudinal Magnetic Field on Microstructures and Properties of Welded Joint of AZ31 Magnesium Alloy |
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| SU Yun-hai,LIU Zheng-jun,WANG Yu,ZHANG Gui-qing.Effect of Longitudinal Magnetic Field on Microstructures and Properties of Welded Joint of AZ31 Magnesium Alloy[J].Hot Working Technology,2006(6). |
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| Authors: | SU Yun-hai LIU Zheng-jun WANG Yu ZHANG Gui-qing |
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| Affiliation: | SU Yun-hai1,LIU Zheng-jun1,WANG Yu2,ZHANG Gui-qing1 |
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| Abstract: | During the welding of AZ31 magnesium alloy plate(5mm),AC longitudinal magnetic field was used,and the effects of magnetic field on the mechanical properties and microstructure of welded joint were studied,and the function mechanism of magnetic field was explored.The results show that the AC longitudinal magnetic field stirs welding pool through the rotating arc,which can refine the crystal grain and make the tensile strength and the hardness of welded joint improve, the magnesium alloy in welding pool is purified. Moreover,the introducing of magnetic can reduce the sensibility of hot cracking and suppress the appearance of hot cracking. |
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| Keywords: | AC longitudinal magnetic field AZ31magnesium alloy GTAW structure property |
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