{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T10:18:08Z","timestamp":1774693088671,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,5,16]],"date-time":"2025-05-16T00:00:00Z","timestamp":1747353600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>This study investigates the mechanical and fatigue behaviour of friction stir composite joints fabricated from an aluminum alloy (AA6082-T6) and a glass fibre-reinforced polymer (Noryl\u00ae GFN2) under different service temperature conditions. The joints were tested under both quasi-static and cyclic loading at three different temperatures (23, 75, and 130 \u00b0C). Fracture surfaces were analyzed, and the probabilistic S\u2013N curves were derived using Weibull distribution. Results indicated that increasing the service temperature caused a non-linear decrease in both the quasi-static and fatigue strength of the joints. Compared to room temperature, joints tested at 75 \u00b0C and 130 \u00b0C showed a 10% and 50% reduction in average tensile strength, respectively. The highest fatigue strength occurred at 23 \u00b0C, while the lowest was at 130 \u00b0C, in line with the quasi-static results. Fatigue stress-life plots displayed a semi-logarithmic nature, with lives ranging from 102 to 105 cycles for stress amplitudes between 7.7 and 22.2 MPa at 23 \u00b0C, 7.2 to 19.8 MPa at 75 \u00b0C, and 6.2 to 13.5 MPa at 130 \u00b0C. The joints\u2019 failure occurred in the polymeric base material close to joints\u2019 interface, highlighting the critical role of the polymer in limiting joints\u2019 performance, as confirmed by thermal and scanning electron microscopy analyses.<\/jats:p>","DOI":"10.3390\/polym17101366","type":"journal-article","created":{"date-parts":[[2025,5,16]],"date-time":"2025-05-16T10:24:02Z","timestamp":1747391042000},"page":"1366","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Effect of Service Temperature on the Mechanical and Fatigue Behaviour of Metal\u2013Polymer Friction Stir Composite Joints"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8165-5946","authenticated-orcid":false,"given":"Arm\u00e9nio N.","family":"Correia","sequence":"first","affiliation":[{"name":"Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-2887-1842","authenticated-orcid":false,"given":"Rodrigo J.","family":"Coelho","sequence":"additional","affiliation":[{"name":"INEGI, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0587-3041","authenticated-orcid":false,"given":"Daniel F. O.","family":"Braga","sequence":"additional","affiliation":[{"name":"INEGI, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 400, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2552-8437","authenticated-orcid":false,"given":"Mafalda","family":"Guedes","sequence":"additional","affiliation":[{"name":"UnIRE, ISEL, Instituto Polit\u00e9cnico de Lisboa, Av. Conselheiro Em\u00eddio Navarro 1, 1959-007 Lisboa, Portugal"},{"name":"CeFEMA-LaPMET, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"given":"Ricardo","family":"Baptista","sequence":"additional","affiliation":[{"name":"UnIRE, ISEL, Instituto Polit\u00e9cnico de Lisboa, Av. Conselheiro Em\u00eddio Navarro 1, 1959-007 Lisboa, Portugal"}]},{"given":"Virg\u00ednia","family":"Infante","sequence":"additional","affiliation":[{"name":"LAETA, IDMEC, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Weman, K. (2012). 11\u2014Pressure welding methods. Welding Processes Handbook, Woodhead Publishing. [2nd ed.].","DOI":"10.1533\/9780857095183.119"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.mser.2005.07.001","article-title":"Friction stir welding and processing","volume":"50","author":"Mishra","year":"2005","journal-title":"Mater. Sci. Eng. 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