Anisotropic Behavior and Micromechanisms of Ti60 Alloy Sheet

Anisotropic Behavior and Micromechanisms of Ti60 Alloy Sheet | 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 Research Article Anisotropic Behavior and Micromechanisms of Ti60 Alloy Sheet Shao Yanxin, Hui Zheng, Yongliang Zhang, Jue Wang, Yingjie Han, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9353080/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The mechanical anisotropy of near-α titanium alloys under high-temperature service conditions plays a critical role in determining their formability and structural reliability. In this study, a Ti60 rolled plate was selected as the research material, and the evolution of tensile anisotropy along the RD, TD, and DD was systematically investigated at room temperature and within the temperature range of 720-840°C. The results reveal that the anisotropy of yield strength in the Ti60 plate can be divided into three distinct stages. At room temperature, the yield strengths along the TD and RD are comparable and higher than that along the DD, following the order TD>RD>DD. In the intermediate temperature range of 720-780°C, the yield strengths along the RD and DD become comparable and are lower than that along the TD, maintaining the same ranking of TD>RD>DD. At 840°C, the yield strengths along the TD and RD become comparable, while the anisotropy exhibits a reversal, following the order DD>RD>TD. Based on texture data obtained from EBSD analysis, the distributions and average values of the Schmid factors for the primary slip systems along the three directions were calculated. Combined with the temperature-dependent variations in the critical resolved shear stress (CRSS) of different slip systems, a slip activity parameter was introduced to quantitatively elucidate the origins of mechanical anisotropy. The results indicate that at room temperature, plastic deformation is primarily governed by prismatic slip and basal slip, together with non-thermally activated path-controlled mechanisms, which collectively influence the anisotropic behavior of the titanium alloy. The ranking of slip activity, DD>RD>TD, provides a reasonable explanation for the observed yield strength anisotropy at room temperature. In the intermediate temperature range of 720-780°C, plastic deformation becomes increasingly dependent on thermally activated dislocation slip, and the yield strength exhibits a strong negative correlation with slip activity. Although the CRSS values of various slip systems decrease significantly, their rates of reduction differ, leading to the concurrent activation of multiple ⟨a⟩-type slip systems and resulting in the yield strength along the RD decreasing to a level comparable to that along the DD. When the temperature reaches 840°C, the dominant deformation mechanism undergoes a fundamental transition, shifting to grain boundary sliding-dominated deformation accompanied by the simultaneous activation of multiple dislocation slip systems, which ultimately leads to the reversal of yield strength anisotropy at 840°C. Ti60 sheet Anisotropy Texture effect Schmid factors CRSS Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-9353080","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":626067361,"identity":"895f5a92-80bb-4273-983a-125037519d52","order_by":0,"name":"Shao Yanxin","email":"","orcid":"","institution":"Shenyang Aerospace University","correspondingAuthor":false,"prefix":"","firstName":"Shao","middleName":"","lastName":"Yanxin","suffix":""},{"id":626067362,"identity":"a14f1ae2-3c6c-463d-ab89-1e7545798b80","order_by":1,"name":"Hui Zheng","email":"","orcid":"","institution":"Shenyang Aerospace 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CRSS","lastPublishedDoi":"10.21203/rs.3.rs-9353080/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9353080/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe mechanical anisotropy of near-α titanium alloys under high-temperature service conditions plays a critical role in determining their formability and structural reliability. In this study, a Ti60 rolled plate was selected as the research material, and the evolution of tensile anisotropy along the RD, TD, and DD was systematically investigated at room temperature and within the temperature range of 720-840°C. The results reveal that the anisotropy of yield strength in the Ti60 plate can be divided into three distinct stages. At room temperature, the yield strengths along the TD and RD are comparable and higher than that along the DD, following the order TD\u0026gt;RD\u0026gt;DD. In the intermediate temperature range of 720-780°C, the yield strengths along the RD and DD become comparable and are lower than that along the TD, maintaining the same ranking of TD\u0026gt;RD\u0026gt;DD. At 840°C, the yield strengths along the TD and RD become comparable, while the anisotropy exhibits a reversal, following the order DD\u0026gt;RD\u0026gt;TD. Based on texture data obtained from EBSD analysis, the distributions and average values of the Schmid factors for the primary slip systems along the three directions were calculated. Combined with the temperature-dependent variations in the critical resolved shear stress (CRSS) of different slip systems, a slip activity parameter was introduced to quantitatively elucidate the origins of mechanical anisotropy. The results indicate that at room temperature, plastic deformation is primarily governed by prismatic slip and basal slip, together with non-thermally activated path-controlled mechanisms, which collectively influence the anisotropic behavior of the titanium alloy. The ranking of slip activity, DD\u0026gt;RD\u0026gt;TD, provides a reasonable explanation for the observed yield strength anisotropy at room temperature. In the intermediate temperature range of 720-780°C, plastic deformation becomes increasingly dependent on thermally activated dislocation slip, and the yield strength exhibits a strong negative correlation with slip activity. Although the CRSS values of various slip systems decrease significantly, their rates of reduction differ, leading to the concurrent activation of multiple ⟨a⟩-type slip systems and resulting in the yield strength along the RD decreasing to a level comparable to that along the DD. When the temperature reaches 840°C, the dominant deformation mechanism undergoes a fundamental transition, shifting to grain boundary sliding-dominated deformation accompanied by the simultaneous activation of multiple dislocation slip systems, which ultimately leads to the reversal of yield strength anisotropy at 840°C.\u003c/p\u003e","manuscriptTitle":"Anisotropic Behavior and Micromechanisms of Ti60 Alloy Sheet","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-21 07:11:16","doi":"10.21203/rs.3.rs-9353080/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"12052b67-5b37-4e08-be9a-5e30a426daa4","owner":[],"postedDate":"April 21st, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2026-05-11T09:38:40+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-21 07:11:16","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9353080","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9353080","identity":"rs-9353080","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}