{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T10:25:19Z","timestamp":1787307919127,"version":"build-2736575974"},"reference-count":29,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shaanxi Provincial \u201cTwoChains Integration\u201d Joint Project for Enterprises","award":["2023-LL-QY-33"],"award-info":[{"award-number":["2023-LL-QY-33"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This work explores V-alloyed Al0.4Co0.5V0.2FeNi high-entropy alloys that are solution-treated at 1000\u20131200 \u00b0C for five hours and water-quenched. Solidification of this high-entropy alloy follows the sequence face-centered cubic (FCC) \u2192 ordered L12 \u2192 body-centered cubic (BCC) \u2192 ordered B2. All treated alloys maintain dual FCC\u2013BCC-B2 microstructures, with temperature altering only morphological features. At 1000 and 1100 \u00b0C, coherent spinodal decomposition takes place in FCC matrices to form rodlike precipitates with 20.3% lattice misfit; meanwhile, Ostwald ripening lengthens the precipitates from 1.41 to 2.11 \u03bcm. Spinodal decomposition is inhibited at 1200 \u00b0C, which is accompanied by coarsening and granulation of B2-ordered BCC grains. Slow atomic diffusion prevents recrystallization even above 0.4Tm. Solution heat treatment dissolves the B2 phases to generate supersaturated solutions stronger than the as-cast counterparts. Elevated solution temperatures reduce hardness (243\u2013190 MPa) and tensile strength (919\u2013839 MPa) but boost elongation (26\u201335%). Fractures display mixed dimple-cleavage features. Overall, a five-hour solution treatment at 1100 \u00b0C plus water quenching delivers balanced strength (851 MPa) and ductility (33%), serving as the optimal heat treatment for this alloy.<\/jats:p>","DOI":"10.3390\/ma19163551","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T09:31:59Z","timestamp":1787304719000},"page":"3551","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effects of Solution Treatment on the Microstructure and Properties of Al0.4Co0.5V0.2FeNi High-Entropy Alloys"],"prefix":"10.3390","volume":"19","author":[{"given":"Hongbo","family":"Duan","sequence":"first","affiliation":[{"name":"School of Materials and Chemical Engineering, Xi\u2019an Technological University, Xi\u2019an 710021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Materials and Chemical Engineering, Xi\u2019an Technological University, Xi\u2019an 710021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhijun","family":"Ma","sequence":"additional","affiliation":[{"name":"School of Materials and Chemical Engineering, Xi\u2019an Technological University, Xi\u2019an 710021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Li","sequence":"additional","affiliation":[{"name":"School of Materials and Chemical Engineering, Xi\u2019an Technological University, Xi\u2019an 710021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"149511","DOI":"10.1016\/j.msea.2025.149511","article-title":"Microstructure and mechanical properties of cold-rolled Fe-Ni-Cr-Al-Ti high-entropy alloys annealed at 800~1000 \u00b0C","volume":"950","author":"Chen","year":"2026","journal-title":"Mater. 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