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以2.8 mm厚2A97-T3铝锂合金板为试验材料，采用填丝搅拌摩擦焊工艺，实现了T形接头内侧角的填丝焊接，得到成型良好、无缺陷的T形焊接接头。结合目视观察、超声检测、工业CT检测和截面金相等方法，研究了焊丝形状、装配间隙和工艺参数对T形接头焊接成型质量的影响。结果表明：与圆形焊丝相比，采用方形焊丝的焊缝成型质量更好；当蒙皮和筋板之间的间隙值达到约1.09 mm时，T形接头开始出现缺陷，缺陷尺寸随着间隙值的增加而增加，缺陷类型由小孔洞逐渐变为块状缺肉，缺陷位置逐步向筋板的高度方向延伸。在旋转速度为2000 r·min-1、焊接速度为50～100 mm·min-1条件下，采用方形焊丝可获得成型良好、无缺陷的T形接头。
Abstract：2A97-T3 Al-Li alloy sheets with thickness of 2.8 mm were selected as the test materials. Filler wire welding on the inner corner of T-joints was realized via wire-filled stir welding process, and sound defect-free T-joints with satisfactory forming quality were obtained. Combined with visual inspection, ultrasonic testing, industrial CT testing and cross-sectional metallography, the effects of filler wire profile, assembly gap and process parameters on the welding forming quality of T-joints were investigated. The results show that compared with circle filler wires, square filler wires deliver superior weld forming quality. Defects initiate in T-joints when the gap between skin and stringer plate reaches approximately 1.09 mm. Defect size rises with increasing gap value, defect morphology evolves from tiny voids to massive insufficient filling, and defect locations extend gradually along the height direction of the stringer. Sound defect-free T-joints with satisfactory forming quality can be produced using square filler wires under the rotational speed of 2000 r·min-1and the welding speed ranging from 50 to 100 mm·min-1.
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基本信息:
中图分类号:TG453.9
引用信息:
[1]邱宇,管卫,曾元松,等.填丝搅拌摩擦焊工艺对铝锂合金T形接头成型质量的影响[J].塑性工程学报,2026,33(07):60-68.
基金信息:
航空科学基金资助项目(20240011048001); 天津市自然科学基金青年项目B(24JCQNJC01790)
2026-07-21
2026-07-21
2026-07-21