铝合金与树脂基复合材料的铆接/搅拌摩擦搭接复合焊接  

Hybrid welding of riveting/friction stir lap joining of aluminum alloy to resin-based composite

作　　者：姜春阳 吴利辉[2] 常云龙[1] 薛鹏[2] 倪丁瑞[2] 肖伯律[2] 马宗义[2] JIANG Chunyang;WU Lihui;CHANG Yunlong;XUE Peng;NI Dingrui;XIAO Bolv;MA Zongyi(School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China;Shi Changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110870 [2]中国科学院金属研究所师昌绪先进材料创新中心,沈阳110016

出　　处：《航空学报》2022年第2期145-155,共11页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51975553);辽宁省自然科学基金(2021-MS-007);中国科学院青年创新促进会项目(2021193)。

摘　　要：轻量化因可降低油耗、提高效率及降低成本等优势已成为航空航天、轨道交通等领域的重要发展方向。铝合金与树脂基复合材料的异种焊因其高度满足轻量化需求而得到研究者的极大关注,但由于二者性质的巨大差异,不易获得高质量连接。提出了一种铆接和搅拌摩擦搭接焊复合焊的方式,实现了5052铝合金与树脂基复合材料的高质量连接,接头剪切拉伸力达到6.2 kN。机械互锁和界面紧密结合是复合焊接接头的主要连接机理。同时,在满足高强轻量化的基础上,接头失效前的拉伸位移相比于传统的铆接,提高了212%。这是应力集中的改善、连接面积的增加、界面连接紧密程度的增加和铆钉的抗剪切能力等方面的综合结果。复合焊使接头具有铆接的高强度的同时,又具有搅拌摩擦搭接焊的大连接面积和应力均匀分布的特性,进一步提高了接头的可靠性。因此,铆接/搅拌摩擦搭接焊复合焊的方法在获得可靠的金属/树脂基复合材料异种接头上具有极大的潜力。Lightweight has become a significant development direction in aerospace,rail transportation and other fields because of its advantages in such as reducing fuel consumption,improving efficiency and reducing costs.The dissimilar joining of aluminum alloy and resin-based composite has attracted great attention because it can meet the demand of lightweight considerably.However,due to the huge property difference between the two materials,it is difficult to obtain a high-quality joint.A hybrid welding method combining riveting with friction stir lap joining was proposed to achieve a high-quality joint of 5052 aluminum alloy and resin-based composites,and the joint tensile shear force achieved 6.2 kN.Mechanical interlocking and tight bonding at the interface were the main joining mechanisms of hybrid welding.In the condition of high strength and lightweight,the tensile displacement of the joint before failure of the proposed method was 212%higher than that of the traditional riveting.This was a comprehensive result of improvement of stress concentration,increase of joining area,increase of tightness of interface and shear resistance of the rivet.With hybrid welding,the joints have not only high strength of riveting,but also the characteristics of large joining area and uniform stress distribution of friction stir lap joining,which further improve reliability of the joint.Therefore,the hybrid welding of riveting and friction stir lap joining has great potential in obtaining a reliable dissimilar metal/resin-based composite joint.

关 键 词：复合焊 铆接 搅拌摩擦焊 铝合金 树脂基复合材料 异种焊 

分 类 号：V229.8[航空宇航科学与技术—飞行器设计]