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Powder metallurgy of high-strength Al90.4Y4.4Ni4.3Co0.9 gas-atomized powder
IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
IFW Dresden, Institut für Komplexe Materialien; Chalmers University of Technology, Gothenburg.ORCID iD: 0000-0001-7938-9909
IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
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2012 (English)In: 13th International Conference on Aluminum Alloys (ICAA13), Springer, Cham , 2012, p. 1017-1022Conference paper, Published paper (Refereed)
Abstract [en]

Al90.4Y4.4Ni4.3Co0.9 gas-atomized powder was hot pressed (HP) to produce highly dense bulk samples through combined devitrification and consolidation. The microstructure of the as-atomized powder is a mixture of amorphous phase with nanocrystalline fcc Al, whereas the consolidated samples consists of fcc Al and a series of intermetallic phases with or without residual amorphous phase depending on the hot pressing temperature (673 or 723 K). The HP samples exhibit a remarkable high strength of ~ 925 MPa (HP at 673 K) and ~ 820 MPa (HP at 723 K) combined with a plastic strain ranging between 14 and 30%. The reduction in strength for the sample HP at 723 K is linked to the complete crystallization of the powder with no residual amorphous phase.

Place, publisher, year, edition, pages
Springer, Cham , 2012. p. 1017-1022
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:du-31534DOI: 10.1007/978-3-319-48761-8_152OAI: oai:DiVA.org:du-31534DiVA, id: diva2:1382136
Conference
13th International Conference on Aluminum Alloys (ICAA13)
Available from: 2020-01-02 Created: 2020-01-02 Last updated: 2020-01-02Bibliographically approved

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Publisher's full texthttps://link.springer.com/chapter/10.1007/978-3-319-48761-8_152

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Surreddi, Kumar Babu

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CiteExportLink to record
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