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

Published online by Cambridge University Press:  30 January 2017

Saeid Lotfian ,
Gesa Rolink ,
Andreas Weisheit  and
Martin Palm
Saeid Lotfian
Affiliation:
Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, D-40237 Düsseldorf, Germany
Gesa Rolink
Affiliation:
Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074Aachen, Germany
Andreas Weisheit
Affiliation:
Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074Aachen, Germany
Martin Palm*
Affiliation:
Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Str. 1, D-40237 Düsseldorf, Germany
*
*(Email: palm@mpie.de)
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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).

Keywords

microstructurepowder processingscanning electron microscopy (SEM)
Type
Articles
Information
MRS Advances , Volume 2 , Issue 26: Mechanical Behavior and Failure Mechanisms of Materials , 2017 , pp. 1393 - 1398
Copyright
Copyright © Materials Research Society 2017 

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References

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