Development of Zn–22Al–xAg filler metals for Brazing 6061 aluminum alloy to T2 copper

Development of Zn–22Al–xAg filler metals for Brazing 6061 aluminum alloy to T2 copper | 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 Development of Zn–22Al–xAg filler metals for Brazing 6061 aluminum alloy to T2 copper Xintao Li, Yunlong Zhai, Mingyang Liu, Xiu Wang, Tianguo Wang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5314892/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 5 You are reading this latest preprint version Abstract To obtain Cu/Al brazing materials with better overall performances, scanning electron microscopy, X-ray diffraction, and electrochemical testing were used to analyze the influences of trace Ag elements on the microstructure and properties of Zn − 22Al − xAg filler metals. The results show that the liquid phase temperature of Zn − 22Al − xAg is about 450°C, and the trace addition of the Ag element has little effect on the melting point of the filler metal. When the Ag content was varied from 0 − 1.2 wt.%, the reticulated eutectic crystals in the microstructure of as − cast Zn − 22Al − xAg gradually began to connect to form a larger reticulated structure, and the phenomenon of grain − boundary aggregation became more and more obvious in the extruded-state alloy. In addition, when the Ag content was 0.8 wt.%, the spreading area of the filler metal on the Cu plate increased by 30.45% compared with that without Ag. After brazing, the thickness of the compounds in the interfacial layer along the filler metals/Cu decreased significantly, the shape of the compounds was more regular, and the shear strength of the brazed joints reached the maximum value of 40.08 MPa, but the corrosion resistance of the filler metal was slightly decreased compared with that of the Zn-22Al at the same time. Ag element filler metals microstructure wetting ability corrosion resistance Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 14 Nov, 2024 Reviewers invited by journal 14 Nov, 2024 Editor invited by journal 28 Oct, 2024 Editor assigned by journal 23 Oct, 2024 First submitted to journal 22 Oct, 2024 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-5314892","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":378178778,"identity":"c8a9fe13-7111-4e35-875b-d437c16c5817","order_by":0,"name":"Xintao Li","email":"","orcid":"","institution":"Institute of New Materials Guangdong Academy of Sciences","correspondingAuthor":false,"prefix":"","firstName":"Xintao","middleName":"","lastName":"Li","suffix":""},{"id":378178779,"identity":"8fb7f9d4-ad4d-47d7-90b8-329fcabffa3f","order_by":1,"name":"Yunlong 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The results show that the liquid phase temperature of Zn\u0026thinsp;\u0026minus;\u0026thinsp;22Al\u0026thinsp;\u0026minus;\u0026thinsp;xAg is about 450\u0026deg;C, and the trace addition of the Ag element has little effect on the melting point of the filler metal. When the Ag content was varied from 0\u0026thinsp;\u0026minus;\u0026thinsp;1.2 wt.%, the reticulated eutectic crystals in the microstructure of as \u0026minus;\u0026thinsp;cast Zn\u0026thinsp;\u0026minus;\u0026thinsp;22Al\u0026thinsp;\u0026minus;\u0026thinsp;xAg gradually began to connect to form a larger reticulated structure, and the phenomenon of grain\u0026thinsp;\u0026minus;\u0026thinsp;boundary aggregation became more and more obvious in the extruded-state alloy. In addition, when the Ag content was 0.8 wt.%, the spreading area of the filler metal on the Cu plate increased by 30.45% compared with that without Ag. 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