Fatigue performance of hybrid overlap friction stir welding and adhesive bonding of an Al‐Mg‐Cu alloy
Fatigue performance of hybrid overlap friction stir welding and adhesive bonding of an Al‐Mg‐Cu alloy
复制标题
Al-Mg-Cu合金混合搭接搅拌摩擦焊和粘接的疲劳性能
DOI：
10.1111/ffe.12933
复制
发表时间：
2018
影响因子：
3.7
通讯作者：
P. Moreira
中科院分区：
文献类型：
--
作者：
Daniel F. O. Braga;R. Maciel;L. Bergmann;L. F. Silva;V. Infante;Jorge F. Santos;P. Moreira
飞机制造中对减轻重量和精简制造和装配过程的需求导致了对焊接技术的追求。搅拌摩擦焊（FSW）是一种已被考虑用于这种应用的技术。由于它是一种固态连接方法，因此可以在各种材料中创建高性能接头，同时避免了紧固件，裂纹塞，加倍器等的重叠长度和增加重量。然而，由于几何公差管理要求，将该技术应用于大型机身外壳部件的装配是具有挑战性的。本文提出了一种针对此类应用的混合连接方法，包括摩擦焊和胶粘剂连接。对AA2024‐T3 Al‐Mg‐Cu合金单搭接接头的疲劳性能进行了评估，并对FSW重叠接头和胶粘接接头进行了基准测试。通过重叠FSW接头的杂交，显著提高了材料的强度和塑性。混合接头的疲劳强度也高于FSW重叠接头，但不如胶粘接接头高。
The need for weight reduction and leaner manufacturing and assembly processes in aircraft construction has led to the pursuit of welding technologies. One such technology that has been considered for this application is friction stir welding (FSW). Since it is a solid‐state joining method, it creates high performing joints in a wide range of materials while avoiding overlap lengths and added weight from fasteners, crack stoppers, doublers, etc. However, the adoption of this technology to the assembly of large fuselage shell components is challenging, due to geometric tolerance management requirements. In this paper, a hybrid joining method is proposed for such application, involving FSW and adhesive bonding. Fatigue performance of single lap joints of AA2024‐T3 Al‐Mg‐Cu alloy was assessed and benchmarked against FSW overlap and adhesive bonded joints. Significant strength and ductility increase was achieved through the hybridization of the overlap FSW joints. Fatigue strength of the hybrid joints was also higher than FSW overlap joints, although not as high as adhesive bonded joints.