中国有色金属学报(英文版), 2017, 27(1): 10-16.
10.1016/S1003-6326(17)60002-5
焊缝余高对2219-T87铝合金TIG焊接头拉伸行为及力学性能的影响
王国庆
1,
,
李权
2,
,
李艳军
3,
,
吴爱萍
4,
,
麻宁绪
5,
,
鄢东洋
6,
,
吴会强
7,
1.中国运载火箭技术研究院,北京,100076;
2.首都航天机械公司,北京,100076;
3.清华大学 机械工程系，北京 100084; 清华大学 先进成形制造教育部重点实验室，北京 100084;
4.清华大学 机械工程系，北京 100084; 清华大学 先进成形制造教育部重点实验室，北京 100084;
5.Joining and Welding Research Institute，Osaka University，Osaka，Ibaraki 567-0047，Japan;
6.中国运载火箭技术研究院,北京,100076;
7.中国运载火箭技术研究院,北京,100076
运载火箭燃料贮箱通常采用2219-T87铝合金钨极氩弧焊(TIG)生产。由于贮箱服役时的承载环境比较严苛，TIG焊接头的余高控制是贮箱生产及其性能评价中的重要问题。采用实验和数值模拟的方法研究焊趾形状和焊趾位置对接头拉伸行为及力学性能的影响。研究结果表明，焊趾形状对接头的伸长率影响显著，数值计算的结果中伸长率最低值与最高值相差达96.9%；启裂侧焊趾处于焊缝和部分熔化区时接头伸长率高于焊趾处于焊缝与部分熔化区交界处的。
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