{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T05:35:58Z","timestamp":1790746558120,"version":"4.1.0"},"reference-count":95,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2019,12,31]],"date-time":"2019-12-31T00:00:00Z","timestamp":1577750400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51605287"],"award-info":[{"award-number":["51605287"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007219","name":"Natural Science Foundation of Shanghai","doi-asserted-by":"publisher","award":["16ZR1417100"],"award-info":[{"award-number":["16ZR1417100"]}],"id":[{"id":"10.13039\/100007219","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Aluminum (Al) and copper (Cu) have been widely used in many industrial fields thanks to their good plasticity, high thermal conductivity and excellent electrical conductivity. An effective joining of dissimilar Al and Cu materials can make full use of the special characteristics of these two metals. Friction stir spot welding (FSSW), as an efficient solid-state welding method suitable for joining of dissimilar metal materials, has great prospects in future industrial applications. In this paper, the FSSW studies on Al-Cu dissimilar materials are reviewed. The research progress and current status of Al-Cu FSSW are reviewed with respect to tool features, macroscopic characteristics of welded joints, microstructures, defects in welds and mechanical properties of joints. In addition, some suggestions on further study are put forward in order to promote the development and progress of Al-Cu FSSW studies in several respects: material flow, thermal history, addition of intermediate layer, auxiliary methods and functionalization of Al-Cu FSSW joint.<\/jats:p>","DOI":"10.3390\/ma13010156","type":"journal-article","created":{"date-parts":[[2019,12,31]],"date-time":"2019-12-31T07:40:55Z","timestamp":1577778055000},"page":"156","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":62,"title":["Friction Stir Spot Welding of Aluminum and Copper: A Review"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2979-672X","authenticated-orcid":false,"given":"Mingshen","family":"Li","sequence":"first","affiliation":[{"name":"Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China"},{"name":"School of aerospace engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8141-1888","authenticated-orcid":false,"given":"Chaoqun","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dayong","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Long-Life High Temperature Materials, Dong Fang Turbine Co., Ltd. Deyang Sichuan 61800, China"},{"name":"Dongfang Electric Corporation Dongfang Turbine Co., LTD, Deyang 618000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Zhou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China"},{"name":"Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Wellmann","sequence":"additional","affiliation":[{"name":"Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China"},{"name":"Department of Engineering, Lancaster University, Bailrigg, Lancaster LA1 4YW, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3602-259X","authenticated-orcid":false,"given":"Yingtao","family":"Tian","sequence":"additional","affiliation":[{"name":"Department of Engineering, Lancaster University, Bailrigg, Lancaster LA1 4YW, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1021","DOI":"10.1007\/s00170-017-0961-2","article-title":"Microstructure characterization and mechanical behavior of dissimilar friction stir welded Al\/Cu couple with different joint configurations","volume":"94","author":"Zhang","year":"2018","journal-title":"Int. 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