Effects of Partitioning Time and Temperature on the Microstructure and Mechanical Properties of a High Strength Microalloyed Steel

Effects of Partitioning Time and Temperature on the Microstructure and Mechanical Properties of a High Strength Microalloyed Steel | 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 Effects of Partitioning Time and Temperature on the Microstructure and Mechanical Properties of a High Strength Microalloyed Steel ali almasi, abbas kianvash, abolfazl tutunchi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-513087/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 In the present study, in a quenching-partitioning (Q-P) process, the effects of partitioning time (Pt) and partitioning temperature (PT) on the mechanical and microstructural properties of a microalloyed Fe-0.21C-1.5Si-2.2Mn-0.054Al-0.08Ti steel were studied. The XRD and SEM results confirmed increases in retained austenite (γ R ) volume fraction (V γR ) and (γ R )carbon concentration by increasing Pt and PT. XRD patterns confirmed reduction in (V γR )by further increasing the Pt and PT over 500 sec and 390°C, respectively, due to super-saturation of austenite (γ) with carbon. PT of 390°C and Pt of 500 sec were recorded as the optimum values for PTs and Pts, which allowed the present steel to obtain higher formability and higher fracture strain characteristics, while retaining higher hardness and strength. The highest yield and tensile strength, hardness and fracture elongation were obtained for the sample partitioned at 390°C for about 500 sec, which were about 741MPa, 1366 MPa, 424 HV and 25.2 %, respectively. Biopolymers Polymer Science Mechanical Engineering Quenching and partitioning (Q-P) Retained austenite Yield strength Tensile strength Hardness Fracture elongation Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Full Text 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-513087","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":26452085,"identity":"33432fad-14d5-4d86-bebd-026217d500d4","order_by":0,"name":"ali almasi","email":"","orcid":"","institution":"University of Tabriz","correspondingAuthor":false,"prefix":"","firstName":"ali","middleName":"","lastName":"almasi","suffix":""},{"id":26452086,"identity":"2c251692-99dd-4c1d-881f-a318b8cda7f8","order_by":1,"name":"abbas 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Tensile strength, Hardness, Fracture elongation","lastPublishedDoi":"10.21203/rs.3.rs-513087/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-513087/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn the present study, in a quenching-partitioning (Q-P) process, the effects of partitioning time (Pt) and partitioning temperature (PT) on the mechanical and microstructural properties of a microalloyed Fe-0.21C-1.5Si-2.2Mn-0.054Al-0.08Ti steel were studied. The XRD and SEM results confirmed increases in retained austenite (γ\u003csub\u003eR\u003c/sub\u003e) volume fraction (V\u003csub\u003eγR\u003c/sub\u003e) and (γ\u003csub\u003eR\u003c/sub\u003e)carbon concentration by increasing Pt and PT. XRD patterns confirmed reduction in\u0026nbsp;(V\u003csub\u003eγR\u003c/sub\u003e)by further increasing the Pt and PT over 500 sec and 390°C, respectively, due to super-saturation of austenite (γ) with carbon. PT of 390°C and Pt of 500 sec were recorded as the optimum values for PTs and Pts, which allowed the present steel to obtain higher formability and higher fracture strain characteristics, while retaining higher hardness and strength. The highest yield and tensile strength, hardness and fracture elongation were obtained for the sample partitioned at 390°C for about 500 sec, which were about 741MPa, 1366 MPa, 424 HV and 25.2 %, respectively.\u003c/p\u003e","manuscriptTitle":"Effects of Partitioning Time and Temperature on the Microstructure and Mechanical Properties of a High Strength Microalloyed Steel","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2021-05-13 19:13:40","doi":"10.21203/rs.3.rs-513087/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":"8f3e8e92-9471-4bbe-8e24-9e97f7f287f5","owner":[],"postedDate":"May 13th, 2021","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":4293055,"name":"Biopolymers"},{"id":4293056,"name":"Polymer Science"},{"id":4293057,"name":"Mechanical Engineering"}],"tags":[],"updatedAt":"2021-05-17T16:15:16+00:00","versionOfRecord":[],"versionCreatedAt":"2021-05-13 19:13:40","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-513087","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-513087","identity":"rs-513087","version":["v1"]},"buildId":"J0_U0BvcaRcwD8yVFaRlm","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}