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    Volume 6, Issue 5 (September 2017)

    Special Issue Paper

    Influence of the Heat Treatment Processes on the Properties of High Entropy Alloys Based on Al-Cr-Fe-Mn-Ni System

    (Received 26 January 2017; accepted 1 May 2017)

    Published Online: 19 September 2017

    CODEN: MPCACD

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    Abstract

    In the present paper, high entropy alloys based on an aluminum-chromium-iron-manganese-nickel (Al-Cr-Fe-Mn-Ni) system were prepared by induction melting and annealed in an inert atmosphere. The resulting samples were analyzed by optical microscopy, scanning electron microscopy, and X-ray diffraction to determine the structural characteristics before and after the heat treatment process. Significant phase transformations and changes in the phase distribution were noticed after the heat treatment process. The results were discussed against the thermodynamic criteria calculations for most promising compositions. Hardness tests were provided for the selected samples to indicate the changes in the mechanical properties between various compositions and between as-cast and annealed samples. Results indicated that the heat treatment process determined a significant hardness increase in one of the studied high entropy alloys.

    Author Information:

    Mitrica, Dumitru
    National R&D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, Pantelimon

    Soare, Vasile
    National R&D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, Pantelimon

    Constantin, Ionut
    National R&D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, Pantelimon

    Burada, Marian
    National R&D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, Pantelimon

    Olaru, Mihai T.
    National R&D Institute for Nonferrous and Rare Metals, New Materials and Technologies Laboratory, Pantelimon

    Badilita, Viorel
    National R&D Institute for Nonferrous and Rare Metals, Physical and Chemical Laboratory, Pantelimon

    Soare, Victoria
    National R&D Institute for Nonferrous and Rare Metals, Physical and Chemical Laboratory, Pantelimon

    Stoiciu, Florentin
    National R&D Institute for Nonferrous and Rare Metals, Microscopic Characterization Laboratory, Pantelimon

    Popescu, Gabriela
    Polytechnic University of Bucharest, Centre for Research and Expertizing of Special Materials, Bucharest

    Carcea, Ioan
    Gheorghe Asachi Technical University of Iasi, Faculty of Materials Science and Engineering, Iasi


    Stock #: MPC20170018

    ISSN:2379-1365

    DOI: 10.1520/MPC20170018

    Author
    Title Influence of the Heat Treatment Processes on the Properties of High Entropy Alloys Based on Al-Cr-Fe-Mn-Ni System
    Symposium ,
    Committee B02