{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T15:24:11Z","timestamp":1787498651634,"version":"build-2736575974"},"reference-count":36,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T00:00:00Z","timestamp":1765324800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Key R&D Program of Jiangxi Province, China","award":["20232BBE50007"],"award-info":[{"award-number":["20232BBE50007"]}]},{"DOI":"10.13039\/501100004479","name":"Jiangxi Provincial Natural Science Foundation","doi-asserted-by":"publisher","award":["20224BAB214018"],"award-info":[{"award-number":["20224BAB214018"]}],"id":[{"id":"10.13039\/501100004479","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In the present study, AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was fabricated by laser melting deposition (LMD). Then, post-heat treatment was performed at different temperatures to investigate its effects on microstructure and corrosion property of the alloy. The results obtained from microstructural characterization indicate that the alloy, whether heat-treated or not, exhibited a lamellar eutectic microstructure composed of alternating FCC and BCC phases. With the increase in the heating temperature from 600 to 1000 \u00b0C, the interlamellar spacing and volume fraction of the FCC phase gradually increased. Electrochemical testing in 3.5 wt.% NaCl solution revealed that the resistance of the alloy to corrosion was improved with the increasing heating temperature, which was attributed to the increased volume fraction of the FCC phase. However, the immersion test in 3.5 wt.% NaCl solution also suggests that heating above 800 \u00b0C increased the susceptibility of the alloy to pitting corrosion, due to the more pronounced enrichment of Al in the BCC phase.<\/jats:p>","DOI":"10.3390\/ma18245544","type":"journal-article","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T15:32:17Z","timestamp":1765380737000},"page":"5544","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Effect of Post-Heat Treatment on Microstructure and Corrosion Property of Additively Manufactured AlCoCrFeNi2.1 Eutectic High-Entropy Alloy"],"prefix":"10.3390","volume":"18","author":[{"given":"Xinping","family":"Li","sequence":"first","affiliation":[{"name":"School of Engineering Technology, Nanchang Vocational University, Nanchang 330500, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Ding","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyue","family":"Pi","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuying","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2900-3697","authenticated-orcid":false,"given":"Yun","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/j.msea.2003.10.257","article-title":"Microstructural development in equiatomic multicomponent alloys","volume":"375\u2013377","author":"Cantor","year":"2004","journal-title":"Mater. 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