The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys

The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys | 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 The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys Jing Li, Jialin Wu, Li Jin, Mert Celikin, Fenghua Wang, Shuai Dong, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-122826/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 03 Feb, 2021 Read the published version in Scientific Reports → Version 1 posted 8 You are reading this latest preprint version Abstract The effect of dislocation-RE atoms interactions on the creep behaviour has been studied via creep testing and HAADF-STEM analysis of two extruded alloys; Mg-0.5Ce and Mg-2Gd (wt.%). Almost no Ce atoms are detected in the Mg matrix due to the low solid solubility in as-extruded condition. However, Gd solute segregations are observed along dislocations and hexagonal dislocation patterns. Such segregations can not only pin the dislocation motion and enhance the creep strengthening via dislocation patterns, but also lead to dynamic precipitation. Thus, combing with the stress exponent values, the transition of creep mechanism between Mg-0.5Ce alloys and Mg-2Gd alloys has been found and dislocation-Gd atoms interactions are determined to be the main factor for superior creep resistance of Mg-2Gd alloys. Materials Theory and Modeling Mg-RE alloys Creep mechanisms Dislocation-RE atoms interactions Hexagonal dislocation patterns HAADF-STEM Figures Figure 1 Figure 2 Figure 3 Figure 4 Full Text Supplementary Files SupplementaryMaterial.docx Cite Share Download PDF Status: Published Journal Publication published 03 Feb, 2021 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Major revision 30 Dec, 2020 Reviews received at journal 29 Dec, 2020 Reviewers agreed at journal 16 Dec, 2020 Reviewers invited by journal 16 Dec, 2020 Editor assigned by journal 16 Dec, 2020 Editor invited by journal 09 Dec, 2020 Submission checks completed at journal 08 Dec, 2020 First submitted to journal 06 Dec, 2020 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-122826","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":6073447,"identity":"46cbf845-2fa8-4386-bbe3-b1b54a2dd533","order_by":0,"name":"Jing Li","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Jing","middleName":"","lastName":"Li","suffix":""},{"id":6073448,"identity":"fe99626d-69cc-42a2-8259-fb9b389afb70","order_by":1,"name":"Jialin Wu","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Jialin","middleName":"","lastName":"Wu","suffix":""},{"id":6073449,"identity":"618d5dd5-8510-4a89-b692-cf91d83decea","order_by":2,"name":"Li Jin","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAyUlEQVRIie3PvQrCMBSG4a8I7RJwzaK9hZQuhd5MikMXlY4dRI5LV9duvQUvIRLoVHF17e4guIsN3fuzCeadTuA8cALYbD+YQ5AKGV8DyrwXU4ngIaAnkj6BhPrtCWRBaHUmorQ63WuOPE7Iu6nRw3Qp+O6itMvRpAmxvRwnzBB0xCl0QpyJSST1yZDPDCJhDnNoBgm6v4SRrNOwYNthEhDbvFl+9P3y2j5eh3h19poRUj1lP3EFmNEd3O/y4al+WtLYrs1ms/1rXywXQov2juGKAAAAAElFTkSuQmCC","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Li","middleName":"","lastName":"Jin","suffix":""},{"id":6073450,"identity":"af4b2162-f204-442c-9100-6f87512db590","order_by":3,"name":"Mert Celikin","email":"","orcid":"","institution":"University College Dublin","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Mert","middleName":"","lastName":"Celikin","suffix":""},{"id":6073451,"identity":"5c5a4adb-5839-4d8e-b12c-5498fb05b0f9","order_by":4,"name":"Fenghua Wang","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Fenghua","middleName":"","lastName":"Wang","suffix":""},{"id":6073452,"identity":"f936a308-c05a-4bbf-bde4-19510ec9ed63","order_by":5,"name":"Shuai Dong","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Shuai","middleName":"","lastName":"Dong","suffix":""},{"id":6073453,"identity":"e0d42833-639c-428d-8e54-bf393d64ffa3","order_by":6,"name":"Jie Dong","email":"","orcid":"","institution":"Shanghai Jiao Tong University","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Jie","middleName":"","lastName":"Dong","suffix":""}],"badges":[],"createdAt":"2020-12-06 11:14:01","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-122826/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-122826/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-021-82517-5","type":"published","date":"2021-02-03T19:03:55+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":4200464,"identity":"2a8dac42-5f76-4ccb-b7f6-046f8f4eced4","added_by":"auto","created_at":"2020-12-11 17:26:30","extension":"jpg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":135092,"visible":true,"origin":"","legend":"Microstructure of extruded Mg-0.5Ce (the first row) and Mg-2Gd alloys (the second row) before creep tests：(a) and (d) EBSD orientation maps, (b) and (e) KAM images, (c) and (f) SEM images and EDS analysis. ","description":"","filename":"Fig1.jpg","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1/e68cf92bd46fb34108f5837a.jpg"},{"id":4200466,"identity":"b93d33ae-eb4c-4b95-b8fa-a3ccee7c8707","added_by":"auto","created_at":"2020-12-11 17:26:30","extension":"jpg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":96436,"visible":true,"origin":"","legend":"Mechanical behaviours of Mg-0.5Ce (the first row) and Mg-2Gd alloys (the second row) at high temperature：(a) and (e) tension curves at the temperature ranging from 150°C to 250°C, (b) and (f) tension creep curves at 200°C and various applied stress, in which squares mark the point that testing is terminated artificially, (c) and (g) creep rate vs. time images, (d) and (h) log steady state strain rate plotted as a function of log stress. ","description":"","filename":"Fig2.jpg","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1/b7f0a218d43a8321f5f80709.jpg"},{"id":4200467,"identity":"9e776ffa-bfc5-44de-916b-5ee716ab48a0","added_by":"auto","created_at":"2020-12-11 17:26:30","extension":"jpg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":144483,"visible":true,"origin":"","legend":"TEM images taken near the minimum creep rates, i.e., after ~3h at the applied stress of 40MPa for Mg-0.5Ce alloys and ~60h at 70MPa for Mg-2Gd alloys：(a) and (b) two beam conditions for the Mg-0.5Ce alloys, where dislocation climbing is marked by the yellow squares, (c) and (d) two beam conditions for Mg-2Gd alloys, in which the \u003cc\u003e dislocations are marked by the red arrows, (e) the hexagonal dislocation patterns observed along the [0001] axis in the Mg-2Gd alloys, (f) corresponding enlarged images marked by the squares in (e). ","description":"","filename":"Fig3.jpg","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1/6b8bc4d1088d718e9af4ddfe.jpg"},{"id":4200468,"identity":"22f47413-c9ad-4206-96cd-397ba99d99c6","added_by":"auto","created_at":"2020-12-11 17:26:31","extension":"jpg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":203953,"visible":true,"origin":"","legend":"HAADF-STEM images taken near the minimum creep rates, i.e., after ~3h at the applied stress of 40MPa for Mg-0.5Ce alloys and ~60h at 70MPa for Mg-2Gd alloys：(a) Mg-0.5Ce alloys recorded along the [2110] zone axis, (b)-(f) Mg-2Gd alloys. ","description":"","filename":"Fig4.jpg","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1/1dce0d8e5209c03d2ef8506c.jpg"},{"id":13564571,"identity":"a603d9b2-a49e-4702-8920-e05740cf5267","added_by":"auto","created_at":"2021-09-17 03:21:23","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1392531,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1_covered.pdf"},{"id":4200469,"identity":"0a69d1dd-74d5-492d-914a-b615a4999831","added_by":"auto","created_at":"2020-12-11 17:26:35","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1510212,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1_stamped.pdf"},{"id":4200465,"identity":"9f86f2cc-039f-4108-8c7f-5f81e5734e82","added_by":"auto","created_at":"2020-12-11 17:26:30","extension":"docx","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":512806,"visible":true,"origin":"","legend":"","description":"","filename":"SupplementaryMaterial.docx","url":"https://assets-eu.researchsquare.com/files/rs-122826/v1/a8b0841c37c80d7a7c681c38.docx"}],"financialInterests":"","formattedTitle":"The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys","fulltext":[{"header":"Full Text","content":"\u003cp\u003eThis preprint is available for \u003ca href='/article/rs-122826/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e.\u003c/p\u003e"}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Mg-RE alloys, Creep mechanisms, Dislocation-RE atoms interactions, Hexagonal dislocation patterns, HAADF-STEM","lastPublishedDoi":"10.21203/rs.3.rs-122826/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-122826/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe effect of dislocation-RE atoms interactions on the creep behaviour has been studied via creep testing and HAADF-STEM analysis of two extruded alloys; Mg-0.5Ce and Mg-2Gd (wt.%). Almost no Ce atoms are detected in the Mg matrix due to the low solid solubility in as-extruded condition. However, Gd solute segregations are observed along dislocations and hexagonal dislocation patterns. Such segregations can not only pin the dislocation motion and enhance the creep strengthening via dislocation patterns, but also lead to dynamic precipitation. Thus, combing with the stress exponent values, the transition of creep mechanism between Mg-0.5Ce alloys and Mg-2Gd alloys has been found and dislocation-Gd atoms interactions are determined to be the main factor for superior creep resistance of Mg-2Gd alloys.\u0026nbsp;\u003c/p\u003e","manuscriptTitle":"The Role of Dislocation-solute Interactions on the Creep Behaviour of Binary Mg-RE Alloys","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2020-12-11 17:26:28","doi":"10.21203/rs.3.rs-122826/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Major revision","date":"2020-12-30T12:25:39+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2020-12-30T04:13:55+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"4b28d63e-afdf-4899-8f5a-b5c8c4760452","date":"2020-12-16T16:03:17+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2020-12-16T07:22:52+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2020-12-16T07:22:04+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2020-12-09T17:09:15+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2020-12-08T15:15:09+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2020-12-06T11:02:30+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"5db56ae0-0d91-4b96-9c61-b04c2a077819","owner":[],"postedDate":"December 11th, 2020","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":1412555,"name":"Materials Theory and Modeling"}],"tags":[],"updatedAt":"2021-08-18T19:42:31+00:00","versionOfRecord":{"articleIdentity":"rs-122826","link":"https://doi.org/10.1038/s41598-021-82517-5","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2021-02-03 19:03:55","publishedOnDateReadable":"February 3rd, 2021"},"versionCreatedAt":"2020-12-11 17:26:28","video":"","vorDoi":"10.1038/s41598-021-82517-5","vorDoiUrl":"https://doi.org/10.1038/s41598-021-82517-5","workflowStages":[]},"version":"v1","identity":"rs-122826","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-122826","identity":"rs-122826","version":["v1"]},"buildId":"WrCJVZZCHTDjtuVLN7oU0","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}