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Efficiency and Accuracy in Thermal Simulation of Powder Bed Fusion of Bulk Metallic Glass
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0003-4061-4632
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-0053-5537
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-2544-9168
2018 (English)In: JOM: The Member Journal of TMS, ISSN 1047-4838, E-ISSN 1543-1851, Vol. 70, no 8, p. 1598-1603Article in journal (Refereed) Published
Abstract [en]

Additive manufacturing by powder bed fusion processes can be utilized to create bulk metallic glass as the process yields considerably high cooling rates. However, there is a risk that reheated material set in layers may become devitrified, i.e., crystallize. Therefore, it is advantageous to simulate the process to fully comprehend it and design it to avoid the aforementioned risk. However, a detailed simulation is computationally demanding. It is necessary to increase the computational speed while maintaining accuracy of the computed temperature field in critical regions. The current study evaluates a few approaches based on temporal reduction to achieve this. It is found that the evaluated approaches save a lot of time and accurately predict the temperature history.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 70, no 8, p. 1598-1603
National Category
Other Materials Engineering
Research subject
Material Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-68768DOI: 10.1007/s11837-018-2919-8OAI: oai:DiVA.org:ltu-68768DiVA, id: diva2:1206559
Note

Validerad;2018;Nivå 2;2018-08-07 (rokbeg)

Available from: 2018-05-17 Created: 2018-05-17 Last updated: 2018-08-09Bibliographically approved

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Lindwall, JohanMalmelöv, AndreasLundbäck, AndreasLindgren, Lars-Erik

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