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Bulk Metallic Glass Manufacturing Using Electron Beam Melting
Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics. (SportsTech)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics. (SportsTech)ORCID iD: 0000-0001-5954-5898
Mid Sweden University, Faculty of Science, Technology and Media, Department of Quality Technology and Management, Mechanical Engineering and Mathematics. (SportsTech)
Exmet AB, Company.
2013 (English)In: Proceedings from Additive Manufacturing & 3D Printing, Nottingham, UK, July 2013, Nottingham, UK, 2013Conference paper, Published paper (Refereed)
Abstract [en]

Modern research into the Bulk Metallic Glass (BMG) manufacturing is driven by theinterest from multiple application areas, including engineering, technology andbiomedicine. Advantages and unique properties of these materials can potentiallyrevolutionise many areas of modern life. But manufacturing of even small BMGcomponents is quite complex and often expensive. Making large BMG samplesusing traditional manufacturing methods like casting is hardly possible at all. Coolingof the large bulky pieces is commonly too slow to allow for successful formation ofamorphous metal. Only the processes with extremely fast cooling rates will succeedin BMG formation. Thus only small or rather thin BMG components are commonlymanufactured today.Beam type additive technologies can provide the route for successful BMGmanufacturing. These methods use layer-by-layer component manufacturing, whenthe melting of the thin powder layers is carried out by the energy of sharply focusedlaser or electron beam. There are hopes that the heat transfer from the small meltareas to the bulk of the metal would provide cooling rates high enough for theamorphous state formation.Present paper reports on the first successful experiments on manufacturing ironbasedBMG samples using EBM® additive manufacturing process. Used iron-basedalloys (also known as amorphous steels) are significantly cheaper andenvironmentally more friendly than traditional rare- earth based compositions. EBM®equipment is very versatile allowing perfect control of the manufacturing process. Butthe number of influencing parameters to be adjusted and issues to be considered inorder to achieve successful BMG manufacturing is quite significant. Among the mostcritical issues are the powder composition and powder grain dimensions, layerthickness, average sample temperature, energy deposition rate, beam focus andmotion parameters etc.Few iron-based BMG samples from the pre-alloyed powder (two powders of thesame composition from two different suppliers) were manufactured at Mid-SwedenUniversity and are currently thoroughly studied. Present paper discusses in somedetails the process development for EBM® manufacturing of iron-based BMGs, firstresults and preliminary conclusions available at the moment.

Place, publisher, year, edition, pages
Nottingham, UK, 2013.
Keyword [en]
Bulk Metallic Glass (BMG); Additive Manufacturing, 3D-printing, Electron Beam Melting (EBM)
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-20588OAI: oai:DiVA.org:miun-20588DiVA: diva2:677553
Conference
International Conference on Additive Manufacturing & 3D Printing, Nottingham, UK, July 2013
Available from: 2013-12-10 Created: 2013-12-10 Last updated: 2013-12-10Bibliographically approved

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Koptyug, AndreyRännar, Lars-ErikBäckström, Mikael
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