guest ::
| Home > Conference materials > Papers > SPARK PLASMA SINTERING OF BALL MILLED AND ATOMIZED POWDER BASED ON Fe-Al |
Original title:
SPARK PLASMA SINTERING OF BALL MILLED AND ATOMIZED POWDER BASED ON Fe-Al
Authors: Šíma, V. ; Minárik, P. ; Chráska, Tomáš
Document type: Papers
Conference/Event: METAL 2015 - International Conference on Metallurgy and Materials /24./, Brno (CZ), 20160603
Year: 2015
Language: eng
Abstract: High-quality compacts were prepared using the spark plasma sintering (SPS) method from powders of similar composition Fe-Al-Zr-B. The properties of the sintered compacts are strongly dependent on the morphology and properties of the feedstock powder. The first powder was obtained by ball milling of the as cast alloy and the second was prepared by atomization under argon atmosphere. The morphology and structure of the two powders are compared and mechanical properties and microstructure of compacts prepared under the same conditions of the SPS procedure are discussed. The milled powder has an irregular morphology and shape of the polycrystalline particles, which have a completely disordered BCC structure with considerable internal stresses, high concentration of structural defects and the presence of aluminum oxide. The atomized powder particles are nearly spherical, polycrystalline with ordered B2 structure, with no significant signs of internal stresses and oxidation. Microhardness of particles of both powders was measured and compared with the microhardness of compact materials, the results of compression tests of compacts at room temperature were compared and discussed.
Keywords: Iron aluminides; mechanical properties; metallic powders; microstructure; spark plasma sintering
Host item entry: METAL 2015: 24th International Conference on Metallurgy and Materials, Conference Proceedings, ISBN 978-80-87294-62-8
Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0270365
Permalink: http://www.nusl.cz/ntk/nusl-263593
The record appears in these collections:
Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers
Authors: Šíma, V. ; Minárik, P. ; Chráska, Tomáš
Document type: Papers
Conference/Event: METAL 2015 - International Conference on Metallurgy and Materials /24./, Brno (CZ), 20160603
Year: 2015
Language: eng
Abstract: High-quality compacts were prepared using the spark plasma sintering (SPS) method from powders of similar composition Fe-Al-Zr-B. The properties of the sintered compacts are strongly dependent on the morphology and properties of the feedstock powder. The first powder was obtained by ball milling of the as cast alloy and the second was prepared by atomization under argon atmosphere. The morphology and structure of the two powders are compared and mechanical properties and microstructure of compacts prepared under the same conditions of the SPS procedure are discussed. The milled powder has an irregular morphology and shape of the polycrystalline particles, which have a completely disordered BCC structure with considerable internal stresses, high concentration of structural defects and the presence of aluminum oxide. The atomized powder particles are nearly spherical, polycrystalline with ordered B2 structure, with no significant signs of internal stresses and oxidation. Microhardness of particles of both powders was measured and compared with the microhardness of compact materials, the results of compression tests of compacts at room temperature were compared and discussed.
Keywords: Iron aluminides; mechanical properties; metallic powders; microstructure; spark plasma sintering
Host item entry: METAL 2015: 24th International Conference on Metallurgy and Materials, Conference Proceedings, ISBN 978-80-87294-62-8
Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0270365
Permalink: http://www.nusl.cz/ntk/nusl-263593
The record appears in these collections:
Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers
Record created 2017-03-17, last modified 2022-09-29