| 外加磁场对LF21铝合金TIG焊焊缝组织的影响 |
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| 引用本文： | 李军,江淑园,钟其林.外加磁场对LF21铝合金TIG焊焊缝组织的影响[J].热加工工艺,2011,40(1). |
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| 作者姓名： | 李军 江淑园 钟其林 |
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| 作者单位： | 南昌航空大学,航空制造工程学院,江西,南昌,330063 |
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| 基金项目： | 江西省自然科学基金资助项目(0150040) |
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| 摘 要： | 针对LF21铝合金TIG焊接易产生气孔和热裂纹等特点,引入与焊枪同轴的直流外加纵向磁场对LF21铝合金TIG焊接过程进行控制。以外加恒定直流纵向磁场TIG焊为研究对象,通过采用金相分析和硬度分析的方法,研究了纵向磁场TIG焊接LF21铝合金焊缝组织发生变化的规律和原因。结果表明:在适当的磁场强度作用下,焊缝宏观形貌成形美观;焊缝组织获得最佳的细化效果;焊缝中心硬度值大于无磁场强度时的硬度值,并接近于母材硬度值。
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| 关 键 词： | TIG焊 LF21 纵向磁场 显微组织 |
Influence of Applied Magnetic Field on Microstructure of Weld Seam of LF21 Aluminum Alloy by TIG Welding |
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| LI Jun,JIANG Shuyuan,ZHONG Qilin.Influence of Applied Magnetic Field on Microstructure of Weld Seam of LF21 Aluminum Alloy by TIG Welding[J].Hot Working Technology,2011,40(1). |
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| Authors: | LI Jun JIANG Shuyuan ZHONG Qilin |
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| Affiliation: | LI Jun,JIANG Shuyuan,ZHONG Qilin(Institute of Aviation Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China) |
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| Abstract: | Applied DC longitudinal magnetic field coaxial with the welding gun was introduced to control TIG welding process for LF21 aluminum alloy aiming to the thermal cracks and porosity during TIG welding process.Taking constant applied DC longitudinal magnetic field TIG welding as study object the changing patterns and the changing causes of the weld morphology of LF21 aluminum alloy were researched by metallographic and hardness analysis.The experiment results show that,under appropriate magnetic field intensit... |
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| Keywords: | TIG welding LF21 longitudinal magnetic field microstructure |
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