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Chemically graded Fe–Al/steel samples fabricated by laser metal deposition

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Abstract

By laser metal deposition (LMD) samples from Fe–28Al (at.%) have been built on iron and various steels. Chemically graded iron aluminium and Fe–28Al/steel samples were fabricated with intended concentration gradients by controlling the feed rates of the powders. All samples were subsequently heat treated at 700 °C for 1000 h to study possible reactions between Fe–28Al and the steels and the long-term stability of the composition gradients. Microstructures were characterized by scanning electron microscopy (SEM) and concentration profiles along the building direction were analysed by energy- and wavelength-dispersive spectrometry (EDS, WDS).

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Authors and Affiliations

  1. Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, D-40237, Düsseldorf, Germany

    Saeid Lotfian & Martin Palm

  2. Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074, Aachen, Germany

    Gesa Rolink & Andreas Weisheit

Authors
  1. Saeid Lotfian
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  2. Andreas Weisheit
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  3. Martin Palm
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Lotfian, S., Rolink, G., Weisheit, A. et al. Chemically graded Fe–Al/steel samples fabricated by laser metal deposition. MRS Advances 2, 1393–1398 (2017). https://doi.org/10.1557/adv.2017.124

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  • DOI: https://doi.org/10.1557/adv.2017.124

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