{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:54:15Z","timestamp":1791507255674,"version":"4.3.4"},"reference-count":61,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2025,2,3]],"date-time":"2025-02-03T00:00:00Z","timestamp":1738540800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Technological and Basic Research Program of China National Nuclear Corporation","award":["JSZL2020201A001"],"award-info":[{"award-number":["JSZL2020201A001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The accuracy and reliability of small-scale mechanical tests remain doubtful due to significant dependence of the obtained mechanical properties on specimen size. Mesoscale tensile tests with specimen sizes ranging from 10 \u03bcm to 1 mm are capable of obtaining bulk-like properties but are rarely applied to hexagonal close-packed metals. In this study, well-designed comparative tensile tests were carried out on a Zircaloy-4 alloy with a grain size of 4 \u03bcm using femtosecond laser-machined mesoscale specimens with a thickness of about 60 \u03bcm, sub-sized specimens with a thickness of about 1.3 mm, and standard specimens with a thickness of 4 mm. The quantitative results revealed that irrespective of the small specimen dimensions, the yield strength, tensile strength, and tensile ductility are only approximately 10.4%, 5.2%, and 13% lower than those of the standard specimens, respectively. This clearly demonstrates that the mechanical properties can be assessed with satisfactory accuracy by mesoscale tensile tests. The comparatively greater deviation of the yield strength at the mesoscale arises from the disappearance of yield point behavior, while the reduced tensile ductility is associated with the larger volume fraction of surface grains. The surface grains are characterized by more surface dislocation sources and deform with weaker constraints from neighboring grains, leading to smooth plastic yielding and slightly reduced strain hardening at the mesoscale.<\/jats:p>","DOI":"10.3390\/ma18030666","type":"journal-article","created":{"date-parts":[[2025,2,3]],"date-time":"2025-02-03T12:18:56Z","timestamp":1738585136000},"page":"666","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Comparative Study of the Tensile Properties of a Zircaloy-4 Alloy Characterized by Mesoscale and Standard Specimens"],"prefix":"10.3390","volume":"18","author":[{"given":"Ruohan","family":"Dong","sequence":"first","affiliation":[{"name":"Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science Technology, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Zhao","sequence":"additional","affiliation":[{"name":"Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science Technology, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shenghui","family":"Tong","sequence":"additional","affiliation":[{"name":"Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science Technology, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zeen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science Technology, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gang","family":"Li","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Nuclear Reactor Technology, Nuclear Power Institute of China, Chengdu 610041, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0155-7359","authenticated-orcid":false,"given":"Zesheng","family":"You","sequence":"additional","affiliation":[{"name":"Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science Technology, Nanjing 210094, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1179\/026708309X12584564052012","article-title":"25 Year Perspective Aspects of Strain and Strength Measurement in Miniaturised Testing for Engineering Metals and Ceramics","volume":"26","author":"Lord","year":"2010","journal-title":"Mater. 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