Production of net-shape Mn-Al permanent magnets by electron beam melting

Radulov, I. A. (author): Technische Universit at Darmstadt, Darmstadt, Germany

Popov, V.V., Jr. (author): Israel Institute of Metals, Technion R&D Foundation, Technion City, Haifa, Israel

Koptioug, Andrei, 1956- (author): Mittuniversitetet,Institutionen för kvalitets- och maskinteknik,Sports Tech Research Centre

Kovalevsky, A. (author): Israel Institute of Metals, Technion R&D Foundation, Technion City, Haifa, Israel

Essel, S. (author): Israel Institute of Metals, Technion R&D Foundation, Technion City, Haifa, Israel

Gassmann, J. (author): Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWKS, Hanau, Germany

Skokov, K. P. (author): Technische Universit at Darmstadt, Darmstadt, Germany

Bamberger, M. (author): Technion Israel Institute of Technology, Technion City, Haifa, Israel

(creator_code:org_t)

Elsevier BV, 2019
2019
English.
In: Additive Manufacturing. - : Elsevier BV. - 2214-8604 .- 2214-7810. ; 30

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

The main goal of this work is the adoption of additive manufacturing for the production of inexpensive rare-earth free MnAl-based permanent magnets. The use of more advanced binder-free additive manufacturing technique such as Electron Beam Melting (EBM) allows obtaining fully-dense magnetic materials with advanced topology and complex shapes. We focus on the feasibility of controlling the phase formation in additively manufactured Mn-Al alloys by employing post-manufacturing heat treatment. The as-manufactured EBM samples contain 8% of the desired ferromagnetic τ-MnAl phase. After the optimized annealing treatment, the content of the τ-phase was increased to 90%. This sample has a coercivity value of 0.15 T, which is also the maximum achieved in conventionally produced binary MnAl magnets. Moreover, the EBM samples are fully dense and have the same density as the samples produced by conventional melting density.

By the author/editor: Radulov, I. A.; Popov, V.V., Jr.; Koptioug, Andrei ...; Maccari, F.; Kovalevsky, A.; Essel, S.; show more...; Gassmann, J.; Skokov, K. P.; Bamberger, M.; show less...

About the subject

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