{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T11:52:32Z","timestamp":1788349952029,"version":"build-2803163510"},"reference-count":36,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T00:00:00Z","timestamp":1778198400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52275344"],"award-info":[{"award-number":["52275344"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"award":["52275344"],"award-info":[{"award-number":["52275344"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"2025 Jinan Science and Technology Plan \u2018Revealing the List and Taking the Lead\u2019","award":["#202523007"],"award-info":[{"award-number":["#202523007"]}]},{"name":"Major Innovation Project of Qilu University of Technology","award":["2025ZDZX04"],"award-info":[{"award-number":["2025ZDZX04"]}]},{"award":["2025ZDZX04"],"award-info":[{"award-number":["2025ZDZX04"]}],"id":[{"id":"https:\/\/ror.org\/04hyzq608","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Scientific Research Projects of Qilu University of Technology","award":["2023RCKY126"],"award-info":[{"award-number":["2023RCKY126"]}]},{"award":["2023RCKY126"],"award-info":[{"award-number":["2023RCKY126"]}],"id":[{"id":"https:\/\/ror.org\/04hyzq608","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>A systematic investigation was conducted on the effects of Cr alloying on the tensile behavior and microstructural evolution of TiZrNb medium-entropy alloys at 673 K. For comparison, the influences of Al and Cu alloying on the mechanical properties of TiZrNb were also examined. Although Al and Cu alloying enhanced the ultimate tensile strength at room temperature, their improvements in strength and ductility at 673 K were limited. In contrast, the TiZrNb98.5Cr1.5 alloy retained a single body-centered cubic (BCC) phase without forming the conventionally expected Laves phase. Cr effectively suppressed the formation of Zr-rich precipitates. At a strain rate of 1.67 \u00d7 10\u22123 s\u22121 and 673 K, TiZrNb98.5Cr1.5 exhibits an increase in the ultimate tensile strength of approximately 408 MPa compared with the base TiZrNb alloy, while the fracture elongation increases from 10% to 25% and the threshold stress rises from 669 MPa to 1196 MPa, achieving a markedly improved strength\u2013ductility synergy. These results indicate that Cr alloying effectively stabilizes the microstructure and enhances the mechanical performance of TiZrNb alloys at 673 K by suppressing precipitate formation and reducing dislocation accumulation, outperforming Al and Cu alloying at the same temperature.<\/jats:p>","DOI":"10.3390\/ma19101930","type":"journal-article","created":{"date-parts":[[2026,5,11]],"date-time":"2026-05-11T19:35:43Z","timestamp":1778528143000},"page":"1930","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Cr Alloying Enhanced Strength\u2013Ductility Synergy in TiZrNb Alloys at Intermediate Temperature: A Comparative Study with Al and Cu"],"prefix":"10.3390","volume":"19","author":[{"given":"Yelong","family":"An","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Shandong Institute of Mechanical Design and Research, Jinan 250031, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoqiang","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Shandong Institute of Mechanical Design and Research, Jinan 250031, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Shandong Institute of Mechanical Design and Research, Jinan 250031, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bingtao","family":"Tang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Zhao","sequence":"additional","affiliation":[{"name":"Shandong Dazhong Mechanical Manufacturing Co., Ltd., Jinan 271100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aihui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shandong Dazhong Mechanical Manufacturing Co., Ltd., Jinan 271100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yakai","family":"Bai","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6135-3884","authenticated-orcid":false,"given":"Depeng","family":"Shen","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Shandong Key Laboratory of CNC Machine Tool Functional Components, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China"},{"name":"Shandong Institute of Mechanical Design and Research, Jinan 250031, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1375","DOI":"10.1007\/s12540-025-02071-x","article-title":"Advancements in Fabrication Techniques and their Impact on the Properties of Titanium-Based Medium Entropy Alloys for Extreme Environment Applications: A Review","volume":"32","author":"Sanusi","year":"2026","journal-title":"Met. 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