2219 铝合金VPTIG 焊接接头拉伸性能分析 |
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引用本文: | 李来平. 2219 铝合金VPTIG 焊接接头拉伸性能分析[J]. 宇航材料工艺, 2013, 43(6) |
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作者姓名: | 李来平 |
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作者单位: | 上海航天精密机械研究所, |
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摘 要: | 2219 铝合金气孔敏感性较强,变极性TIG 焊接工艺可以有效减少和抑制气孔产生,是适合于 2219 铝合金的焊接工艺。本文介绍了2219T62 铝合金VPTIG 焊接接头的拉伸性能,进行了拉伸断口形貌分析 和微观组织分析。结果表明:2219T62 铝合金VPTIG 焊接接头强度系数可以达到65% 以上,焊接接头为混合 断裂方式,VPTIG 焊缝盖面层气孔相比打底层较多。
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关 键 词: | 2219 铝合金 变极性钨极氩弧焊 焊接接头 拉伸性能 |
Research on Tensile Properties of 2219 Aluminum Alloy VPTIG Welding Joint |
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Affiliation: | Shanghai Spaceflight Precision Machinery Research Institute |
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Abstract: | 2219 aluminum alloy is sensitive to the gas porosity. Variable polarity TIG arc welding technology can independently adjust time and amplitude of positive and negative half period, therefore the VPTIG can be applied in new launch vehicle. The tensile property of 2219 aluminum alloy VPTIG welding joint, tensile fractography analysis and microstructure analysis are introduced in this paper. The results show that the strength factor of 2219 T62 aluminum alloy VPTIG welding joint can reach 65%,the welding joint hybrid fracture and gas porosity of top layer more than backing layer. |
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Keywords: | 2219 aluminum alloy Variable polarity TIG welding Welding joint Tensile property |
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