{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:58:23Z","timestamp":1760147903451,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2023,3,10]],"date-time":"2023-03-10T00:00:00Z","timestamp":1678406400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"],"award-info":[{"award-number":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"]}]},{"name":"Fundamental Research Funds for the Central Universities","award":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"],"award-info":[{"award-number":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"]}]},{"name":"Chongqing Natural Science Foundation general project","award":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"],"award-info":[{"award-number":["51775068","2022CDJXY-010","cstc2021jcyj-msxmX1085"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The plastic deformation behavior of a CHN327 nickel-based superalloy under temperatures ranging from 600 \u00b0C to 700 \u00b0C and strain rates ranging from 0.001 to 0.1 s\u22121 was investigated using uniaxial high-temperature tensile tests. The stress\u2013strain curves obtained by the tests showed that the maximum stress decreased as the temperature increased, while it increased as the strain rate increased. Based on the extensive data obtained in the experiment, three constitutive models (Hollomon, Swift, and the modified Voce equation) were employed to predict the constitutive relation. It was found that the modified Voce equation had the highest correlation coefficient and the best prediction accuracy. Thereafter, in order to predict the fracture of CHN327 during high-temperature tensile deformation, five ductile fracture criteria (Freudenthal, C&amp;L, Brozzo, Ayada, and the R&amp;T model), and the modified Voce equation obtained were incorporated into the finite element software (DEFORM). According to the results, except for the C&amp;L and Brozzo models, all of the other ductile fracture criteria (DFCs) were suitable for predicting the damage distribution of the CHN327 alloy in tensile tests. For all of the DFCs considered, the R&amp;T model provided the most accurate predictions, whose mean error was only 8.9%, far less than the values that other models predicted.<\/jats:p>","DOI":"10.3390\/ma16062232","type":"journal-article","created":{"date-parts":[[2023,3,10]],"date-time":"2023-03-10T03:02:08Z","timestamp":1678417328000},"page":"2232","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Study of Flow Stress Models and Ductile Fracture Criteria for CHN327 Nickel-Based Superalloy"],"prefix":"10.3390","volume":"16","author":[{"given":"Yufeng","family":"Xia","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"},{"name":"Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing, School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenbin","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yingyan","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"},{"name":"Chongqing Key Laboratory of Advanced Mold Intelligent Manufacturing, School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haihao","family":"Teng","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qian","family":"Cheng","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1807","DOI":"10.1007\/s00170-015-7170-7","article-title":"The microstructure and properties change of dies manufactured by bimetal-gradient-layer surfacing technology","volume":"80","author":"Zhang","year":"2015","journal-title":"Int. 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