Microstructures and mechanical behavior of aluminum-copper lap joints
Zhou, Xianglong1; Zhang, Gang1; Shi, Yu1; Zhu, Ming1; Yang, Fuqian2
2017-09-29
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
卷号705页码:105-113
摘要5052 aluminum alloy and pure copper (T2) are joined, using a low heat input pulsed double-electrode gas metal arc welding (DE-GMAW)-brazing method with AlSi12 filler metal. The effects of welding current (heat input) on the microstructure and mechanical behavior of the joints, which consist of Al-Al welding zone and Al-Cu brazing zone, are investigated. The Al-Cu welding zone mainly consists of alpha-Al solid solution and Al-Cu eutectic phase in coral-like shape. There exists a layer of Al2Cu intermetallic compound (IMC) in the Al-Cu brazing zone. Using the theory of thermal activation process, a quadratic relation between the thickness of the IMC layer and welding current intensity is derived. The experimental result supports this relationship. The shear strength of the Al-Cu joints first increases with the increase of the welding current (heat input), reaches a maximum of 17.66 MPa, and then decreases with the increase of the welding current due to the dispersion of the Al2Cu IMCs of large sizes in the Al alloy. Fracture of the Al-Cu lap joints occurs at three different positions, and the corresponding failure mechanisms are discussed according to the morphologies of fracture surfaces.
关键词Al-Cu joint Microstructure Intermetallic compound Shear strength Brittle fracture
DOI10.1016/j.msea.2017.08.056
收录类别SCI
语种英语
资助项目Open Foundation of State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals[SKLAB 0201400802014008]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号WOS:000413135700014
出版者ELSEVIER SCIENCE SA
引用统计
被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/33094
专题省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
通讯作者Shi, Yu; Yang, Fuqian
作者单位1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
2.Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA
第一作者单位省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式
GB/T 7714
Zhou, Xianglong,Zhang, Gang,Shi, Yu,et al. Microstructures and mechanical behavior of aluminum-copper lap joints[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,705:105-113.
APA Zhou, Xianglong,Zhang, Gang,Shi, Yu,Zhu, Ming,&Yang, Fuqian.(2017).Microstructures and mechanical behavior of aluminum-copper lap joints.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,705,105-113.
MLA Zhou, Xianglong,et al."Microstructures and mechanical behavior of aluminum-copper lap joints".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 705(2017):105-113.
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