Powder metallurgy of high-strength Al90.4Y4.4Ni4.3Co0.9 gas-atomized powderShow others and affiliations
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)
2020-01-022020-01-022020-01-02Bibliographically approved