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Simulation of phase evolution in a Zr-based glass forming alloy during multiple laser remelting
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Solid Mechanics.ORCID iD: 0000-0003-4061-4632
ivision of Solid Mechanics, Lund University, Box 118, SE-221 00, Lund, Sweden.
Department of Physics and Astronomy, Uppsala University, Box 538, SE-751 21, Uppsala, Sweden.
Department of Materials Science and Engineering, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden.
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2022 (English)In: Journal of Materials Research and Technology, ISSN 2238-7854, E-ISSN 2214-0697, Vol. 16, p. 1165-1178Article in journal (Refereed) Published
Abstract [en]

Additive manufacturing by laser-based powder bed fusion is a promising technique for bulk metallic glass production. But, reheating by deposition of subsequent layers may cause local crystallisation of the alloy. To investigate the crystalline phase evolution during laser scanning of a Zr-based metallic glass-forming alloy, a simulation strategy based on the finite element method and the classical nucleation theory has been developed and compared with experimental results from multiple laser remelting of a single-track. Multiple laser remelting of a single-track demonstrates the crystallisation behaviour by the influence of thermal history in the reheated material. Scanning electron microscopy and transmission electron microscopy reveals the crystalline phase evolution in the heat affected zone after each laser scan. A trend can be observed where repeated remelting results in an increased crystalline volume fraction with larger crystals in the heat affected zone, both in simulation and experiment. A gradient of cluster number density and mean radius can also be predicted by the model, with good correlation to the experiments. Prediction of crystallisation, as presented in this work, can be a useful tool to aid the development of process parameters during additive manufacturing for bulk metallic glass formation.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 16, p. 1165-1178
Keywords [en]
Additives, Glass, Heat affected zone, High resolution transmission electron microscopy, Laser heating, Laser theory, Metals, Nucleation, Scanning electron microscopy, Zircaloy, (metallic) glass, Classical nucleation theory, Growth theory, Laser-based, Multiple lasers, Nucleation and growth, Phase evolutions, Phase transformation modelling, Powder bed, Simulation of laser-based powder bed fusion, Metallic glass
National Category
Manufacturing, Surface and Joining Technology
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-88722DOI: 10.1016/j.jmrt.2021.12.056ISI: 000782650200002Scopus ID: 2-s2.0-85121898134OAI: oai:DiVA.org:ltu-88722DiVA, id: diva2:1627211
Funder
Swedish Foundation for Strategic Research , GMT14-0048
Note

Validerad;2022;Nivå 2;2022-01-13 (johcin)

Available from: 2022-01-13 Created: 2022-01-13 Last updated: 2024-09-02Bibliographically approved

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Lindwall, JohanLundbäck, Andreas

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