High tensile strength and transformation-induced plasticity in bulk polycrystalline omega titanium

High tensile strength and transformation-induced plasticity in bulk polycrystalline omega titanium | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article High tensile strength and transformation-induced plasticity in bulk polycrystalline omega titanium Norimasa Nishiyama, Yoshinori Tange, Takashi Sawahata, Masafumi Matsushita, and 9 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7172676/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 03 Feb, 2026 Read the published version in Scientific Reports → Version 1 posted 11 You are reading this latest preprint version Abstract Titanium and its alloys exhibit advantageous ductility and strength-to-weight ratios, which makes them suitable for use as structural materials in numerous industrial applications. The wphase has been observed to precipitate during the aging process of titanium alloys, resulting in a loss of ductility. Here we report tensile behavior of bulk polycrystalline w-titanium with a chemical composition of commercially pure titanium grade 4 and an average grain size of 3.4 mm. We observed that stress-induced w → α martensitic phase transformation occurs exclusively in the plastic regime. As plastic deformation proceeds, the volume fraction of a-phase increases. The 0.2% offset yield strength, tensile strength, and elongation to failure were determined to be 1130 ± 30 MPa, 1220 ± 30 MPa, and 16 ± 2 %, respectively. These mechanical properties are comparable to those of a titanium alloy Ti-6Al-4V. The present study revealed transformation-induced plasticity in bulk polycrystalline w-titanium. Physical sciences/Engineering Physical sciences/Materials science Titanium ω phase high-pressure and temperature tensile strength martensitic transformation transformation-induced plasticity Full Text Additional Declarations No competing interests reported. Supplementary Files SupplementaryInformationscientificreports20250720.pdf Cite Share Download PDF Status: Published Journal Publication published 03 Feb, 2026 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 11 Sep, 2025 Reviews received at journal 10 Sep, 2025 Reviewers agreed at journal 21 Aug, 2025 Reviewers agreed at journal 20 Aug, 2025 Reviews received at journal 15 Aug, 2025 Reviewers agreed at journal 27 Jul, 2025 Reviewers invited by journal 25 Jul, 2025 Editor invited by journal 25 Jul, 2025 Editor assigned by journal 23 Jul, 2025 Submission checks completed at journal 22 Jul, 2025 First submitted to journal 20 Jul, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7172676","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":490706511,"identity":"d466ef67-eb04-4859-bb0c-e29e2b611d0a","order_by":0,"name":"Norimasa 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