Characterization of Microstructure of Sintered and Laser Remelted Composites

  1. Prof. J. V. Wood4,
  2. Prof. Dr. L. Schultz5 and
  3. Prof. Dr. D. M. Herlach6
  1. Zoltán Gácsi1,
  2. Tadeusz Pieczonka2,
  3. Jenö Kovács1,
  4. Árpád Kovács1,
  5. Magdolna Szigethy1 and
  6. Gábor Buza3

Published Online: 25 APR 2006

DOI: 10.1002/3527607277.ch61

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

How to Cite

Gácsi, Z., Pieczonka, T., Kovács, J., Kovács, Á., Szigethy, M. and Buza, G. (2000) Characterization of Microstructure of Sintered and Laser Remelted Composites, in Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8 (eds J. V. Wood, L. Schultz and D. M. Herlach), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607277.ch61

Editor Information

  1. 4

    University of Nottingham, Division of Materials, Nottingham NG7 2RD, United Kingdom

  2. 5

    Institut für Festkorper- und Werkstofforschung Dresden e.V., Postfach 270016, 01171 Dresden, Germany

  3. 6

    Deutsches Zentrum für Luft- und Raumfahrt e.V., Linder Hohe, 51170 Köln, Germany

Author Information

  1. 1

    University of Miskolc, Department of Physical Metallurgy, Hungary

  2. 2

    University of Mining and Metallurgy, Krakow, Poland

  3. 3

    Zoltan Bay Institute of Materials Science and Technology, Budapest, Hungary

Publication History

  1. Published Online: 25 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301935

Online ISBN: 9783527607273

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Keywords:

  • sintered and laser remelted composites;
  • characterization of microstructure

Summary

This paper deals with examination of microstructure of composite samples produced by powder metallurgy, which were cold pressed, sintered and partly remelted by laser. All the probes were Al-based and included different quantities - 5, 10, 15 and 20 mass percent - of SiC particles as reinforcement. The samples were sintered in several kinds of gas atmosphere (H2, N2 and mixed) so as to protect the surface of grains from oxidation. The shrinkage owing to the heat treatment was examined by dilatometer. The temperature and time of sintering process were variable. After sintering the surfaces of the samples were remelted by laser. The microporosity of the produced structure was measured by computerized image analysis. Influences of the different gas atmosphere and the remelting process on the microstructure were compared to each other.