{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,2]],"date-time":"2026-11-02T19:07:13Z","timestamp":1793646433143,"version":"4.5.1"},"reference-count":54,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T00:00:00Z","timestamp":1639612800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The influence of tin foil and Ni coatings on microstructures, mechanical properties, and the interfacial reaction mechanism was investigated during laser welding\/brazing of Al\/Cu lap joints. In the presence of a Zn-based filler, tin foil as well as Ni coating strengthened the Al\/Cu joints. The tin foil only slightly influenced the joint strength. It considerably improved the spreading\/wetting ability of the weld filler; however, it weakened the bonding between the seam and the Al base metal. The Ni coating considerably strengthened the Al\/Cu lap joints; the highest tensile strength was 171 MPa, which was higher by 15.5% than that of a joint without any interlayer. Microstructure analysis revealed that composite layers of Ni3Zn14\u2013(\u03c42 Zn\u2013Ni\u2013Al ternary phase)\u2013(\u03b1-Zn solid solution)\u2013Al3Ni formed at the fusion zone (FZ)\/Cu interface. Based on the inferences about the microstructures at the interfaces, thermodynamic results were calculated to analyze the interfacial reaction mechanism. The diffusion of Cu was limited by the Ni coating and the mutual attraction between the Al and Ni atoms. The microstructure comprised Zn, Ni, and Al, and they replaced the brittle Cu\u2013Zn intermetallic compounds, successfully strengthening the bonding of the FZ\/Cu interface.<\/jats:p>","DOI":"10.3390\/ma14247797","type":"journal-article","created":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T21:32:40Z","timestamp":1639690360000},"page":"7797","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Effects of Different Types of Interlayers on the Interfacial Reaction Mechanism at the Cu Side of Al\/Cu Lap Joints Obtained by Laser Welding\/Brazing"],"prefix":"10.3390","volume":"14","author":[{"given":"Ruican","family":"Zhu","sequence":"first","affiliation":[{"name":"Capital Aerospace Machinery Corporation Limited, Beijing 100076, China"},{"name":"Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shixiong","family":"Guo","sequence":"additional","affiliation":[{"name":"Capital Aerospace Machinery Corporation Limited, Beijing 100076, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao","family":"Huang","sequence":"additional","affiliation":[{"name":"Capital Aerospace Machinery Corporation Limited, Beijing 100076, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6393-7912","authenticated-orcid":false,"given":"Zhenglong","family":"Lei","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinrui","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinge","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1007\/s00542-011-1378-8","article-title":"Laser micro-welding of aluminum and copper with and without tin foil alloy","volume":"18","author":"Hailat","year":"2011","journal-title":"Microsyst. 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