夹层爆炸焊接高强度铝合金与钛合金的界面特性和力学性能研究  

The study of interface characteristics and mechanical properties of explosive welding of high-strength aluminum alloy and high-strength titanium alloy

作　　者：陈翔 朱桂春 张程娇 罗宁 胡建华 王新欢 梁国峰 CHEN Xiang;ZHU Guichun;ZHANG Chengjiao;LUO Ning;HU Jianhua;WANG Xinhuan;LIANG Guofeng(State Key Laboratory of Fine Blasting,Jianghan University,Wuhan 430056,Hubei,China;Hubei(Wuhan)Institute of Explosive and Blasting Technology,Wuhan 430056,Hubei,China;Yipuli Co.,Ltd.,Changsha 410000,Hunan,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;National Key Laboratory for Intelligent Construction and Health Maintenance of Deep Underground Engineering,Xuzhou 221116,Jiangsu,China;Hubei Hongrui Ding Testing Technology Co.,Ltd.,Wuhan 430056,Hubei,China)

机构地区：[1]江汉大学省部共建精细爆破国家重点实验室,湖北武汉430056 [2]湖北(武汉)爆炸与爆破技术研究院,湖北武汉430056 [3]易普力股份有限公司,湖南长沙410000 [4]中国矿业大学力学与土木工程学院,江苏徐州221116 [5]深地工程智能建造与健康运维全国重点实验室,江苏徐州221116 [6]湖北弘睿鼎检测技术有限公司,湖北武汉430056

出　　处：《金属加工(热加工)》2025年第4期102-110,共9页MW Metal Forming

基　　金：湖北省教育厅重点项目(D20234406);国家自然科学基金(No.12302436)。

摘　　要：为了实现高强度低熔点铝合金(A7075)与高强度钛合金(Ti-6Al-4V)的爆炸复合,提出了纯铝(A1060)作为夹层的设计思路,对不同焊接参数下的界面形貌和结构特征进行了研究。通过光学显微镜(OM)、扫描电子显微镜(SEM)和万能材料试验机等分析手段对复合板界面的微观组织特征和拉伸弯曲性能进行分析。在两组参数下均实现了A7075/A1060/Ti-6Al-4V金属复合板的夹层爆炸焊接,焊接界面无明显缺陷。不同爆炸焊接参数下,上下界面均观察到熔化区域存在。力学性能结果表明:使用2mm厚度A1060夹层制备出的复合板界面抗剪强度>70.3MPa。弯曲表现方面,板件间隙参数为2mm和5mm的样品拥有更高的抗弯性能,最大抗弯性能为1209.9MPa,拉伸弯曲断裂均未出现在焊接界面上。本研究为该类复合板的爆炸焊接工艺提供了参考。To achieve explosive bonding of high-strength low-melting-point aluminum alloy(A7075) and high-strength titanium alloy(Ti-6Al-4V),this study proposes the use of pure aluminum(A1060) as an interlayer and investigates the interface morphology and structural characteristics under different welding parameters.The microstructural features and tensile-bending properties of the composite plate interface were analyzed using optical microscopy(OM),scanning electron microscopy(SEM),and universal material testing machine.Explosive welding of the A7075/A1060/Ti-6Al-4V metal composite plates with interlayer bonding was successfully achieved under both sets of parameters,with no significant defects observed at the welding interface.Melted regions were found at both the upper and lower interfaces under different explosive welding parameters.Mechanical performance results show that the interface shear strength of the composite plate prepared with a 2mm thick A1060 interlayer is greater than 70.3MPa.In terms of bending performance,samples with interlayer gap parameters of 2mm and 5mm exhibited higher bending strength,with the maximum bending strength reaching 1209.9MPa.No fracture occurred at the welding interface during tensile bending tests.This study provides valuable insights into the explosive welding process for this type of composite plate.

关 键 词：爆炸焊接 夹层 焊接界面 力学性能 铝/钛复合板 

分 类 号：TG456.9[金属学及工艺—焊接]