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Sciences"],"abstract":"<jats:p>This study investigates the impact of low-temperature stress-relieving treatment on the fatigue life of AlSi10Mg components produced by Laser Powder Bed Fusion (L-PBF). The research focuses on a bicycle crank arm, comparing its performance in as-built and heat-treated conditions. The heat treatment involved stress-relieving at 250 \u00b0C for 2 h, followed by water quenching. The study found that the as-built condition exhibited a supersaturated Si cellular-dendritic microstructure, while the heat-treated condition showed coarsening of \u03b2-Mg2Si phases and Si precipitates. This morphological change led to a decrease in hardness and an increase in ductility. Fatigue tests demonstrated that the heat-treated crank arms achieved the target of 100,000 cycles without failure, unlike the as-built samples, which failed prematurely. The fractography analysis identified surface porosity as the primary crack initiation site. The findings suggest that low-temperature stress-relieving treatment can enhance the fatigue performance of L-PBF AlSi10Mg components by reducing residual stresses and improving defect tolerance.<\/jats:p>","DOI":"10.3390\/app15010112","type":"journal-article","created":{"date-parts":[[2024,12,27]],"date-time":"2024-12-27T04:30:58Z","timestamp":1735273858000},"page":"112","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Influence of Low-Temperature Stress-Relieving Treatment in the Fatigue Life of Components Produced by Laser Powder Bed Fusion in AlSi10Mg"],"prefix":"10.3390","volume":"15","author":[{"given":"Malcolm","family":"Ant\u00f3nio","sequence":"first","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8875-8961","authenticated-orcid":false,"given":"Rui","family":"Fernandes","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7133-2331","authenticated-orcid":false,"given":"Joel de","family":"Jesus","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"},{"name":"UnIRE, ISEL, Department of Mechanical Engineering, Polytechnic University of Lisbon, Rua Conselheiro Em\u00eddio Navarro 1, 1959-007 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0259-8926","authenticated-orcid":false,"given":"Lu\u00eds","family":"Borrego","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"},{"name":"Coimbra Institute of Engineering, Polytechnic University of Coimbra, Rua Pedro Nunes, 3030-199 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2471-1125","authenticated-orcid":false,"given":"Ricardo","family":"Branco","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8274-3734","authenticated-orcid":false,"given":"Jos\u00e9 da","family":"Costa","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0295-1841","authenticated-orcid":false,"given":"Jos\u00e9","family":"Ferreira","sequence":"additional","affiliation":[{"name":"CEMMPRE, ARISE, Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, 3030-788 Coimbra, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Yadroitsev, I., Du Plessis, A., and Yadroitsava, I. 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