| 摆动磁场条件下的焊接接头组织研究 |
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| 引用本文： | 康博文,贠垚韬,吴炳杰,聂胜楠,卢庆华.摆动磁场条件下的焊接接头组织研究[J].上海工程技术大学学报,2014,28(3):221-224. |
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| 作者姓名： | 康博文 贠垚韬 吴炳杰 聂胜楠 卢庆华 |
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| 作者单位： | 上海工程技术大学材料工程学院,上海,201620 |
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| 基金项目： | 国家自然科学基金资助项目，上海工程技术大学大学生创新活动计划资助项目 |
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| 摘 要： | 为了优化不锈钢焊接工艺,提高焊接质量,进行了外加电磁场条件下的304不锈钢钨极氩弧焊(TIG),磁场施加方式分别为横向磁场和旋转磁场.焊后采用电子显微镜对焊接接头进行显微组织观察,研究了不同外加磁场类型和不同焊接速度对不锈钢焊接接头组织的作用规律.试验结果表明,外加磁场改变了熔池的流动形态,使金属液由四周向中心流动并伴有搅拌,也使焊缝熔深增大的同时,抑制柱状晶的形成,细化组织.
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| 关 键 词： | 不锈钢 电磁场 显微组织 磁场搅拌 |
Research on Microstructures of Welded Joint in Oscillating Magnetic Field |
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| KANG Bowen,YUN Yaotao,WU Bingjie,NIE Shengnan,LU Qinghua.Research on Microstructures of Welded Joint in Oscillating Magnetic Field[J].Journal of Shanghai University of Engineering Science,2014,28(3):221-224. |
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| Authors: | KANG Bowen YUN Yaotao WU Bingjie NIE Shengnan LU Qinghua |
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| Affiliation: | (College of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China) |
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| Abstract: | In order to optimize the welding procedure of stainless steel and improve the welding quality, the electromagnetic field was applied to the TIG welding of stainless steel 304. In a transeverse magnetic field and a rotating magnetic field, the microstructures of welding joint were observed by electron microscope after TIG welding, the influences of magnetic field type and welding speed on the microstructures of welding joint were investigated. The results show that the imposed magnetic field can change the flow of the molten welding pool, make liquid metal in molten pool flow to the center, accompanied by stirring. With an increase in weld penetration, the formation of columnar crystal was inhibited and microstructure refinement was obtained. |
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| Keywords: | stainless steel electromagnetic field microstructure electromagnetic stirring |
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