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dc.contributor.author
Audebert, Fernando Enrique
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dc.contributor.author
Galano, Marina Lorena
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dc.contributor.author
Triveño Rios, C.
dc.contributor.author
Kasama, H.
dc.contributor.author
Peres, M.
dc.contributor.author
Kiminami, C.
dc.contributor.author
Botta, W. J.
dc.contributor.author
Bolfarini, C.
dc.date.available
2017-06-28T21:20:12Z
dc.date.issued
2013-10
dc.identifier.citation
Audebert, Fernando Enrique; Galano, Marina Lorena; Triveño Rios, C.; Kasama, H.; Peres, M.; et al.; Nanoquasicrystalline Al-Fe-Cr-Nb alloys produced by powder metallurgy; Elsevier; Journal Of Alloys And Compounds; 577; 10-2013; 650-657
dc.identifier.issn
0925-8388
dc.identifier.uri
http://hdl.handle.net/11336/19085
dc.description.abstract
Nano-quasicrystalline Al-Fe-Cr based alloys produced by rapid solidification processes exhibit high strength at elevated temperatures. Nevertheless, the quasicrystalline particles in these systems become unstable at high temperature limiting the industrial applications. In early works, it was observed that the use of Nb or Ta increases the stability of the Al-Fe-Cr quasicrystalline phase delaying the microstructural transformation to higher temperatures. Thus, these nano-quasicrystalline Al-based alloys have become promising new high strength material to be used at elevated temperatures in the automotive and aeronautical industries. In previous works, nano-quasicrystalline Al-Fe-Cr-Nb based alloys were obtained by rapid solidification using the melt-spinning technique. In order to obtain bulk alloys for industrial applications other fabrication routes such as powder production by gas atomization followed by compaction and extrusion are required. In the present work, the production of Al-Fe-Cr-Nb based alloys by powder atomization at laboratory scale was investigated. The powders obtained were sieved in different ranges of sizes and the microstructures were characterised by means of X-ray diffraction, scanning and transmission electron microscopy, and energy dispersive of X-ray analysis. Mechanical properties have been measured by compression tests at room temperature and at 250C. It was observed that a very high temperature is required to produce these alloys by gas atomization; the icosahedral quasicrystalline phase can be retained after the atomization in powder sizes typically under 75um, and also after the extrusion at 375C. The extruded bars were able to retain a very high strength at elevated temperature, around 60% of the yield stress at room temperature, in contrast with the 10-30% typically obtained for many commercial Al alloys.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aluminium Alloys
dc.subject
Quasicrystals
dc.subject
Rapid Solidification
dc.subject
Power Metallurgy
dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Nanoquasicrystalline Al-Fe-Cr-Nb alloys produced by powder metallurgy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-19T18:12:01Z
dc.journal.volume
577
dc.journal.pagination
650-657
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Audebert, Fernando Enrique. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Mecánica. Grupo de Materiales Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
dc.description.fil
Fil: Galano, Marina Lorena. University Of Oxford; Reino Unido
dc.description.fil
Fil: Triveño Rios, C.. Universidade Federal Do Sao Carlos; Brasil
dc.description.fil
Fil: Kasama, H.. Universidade Federal Do Sao Carlos; Brasil
dc.description.fil
Fil: Peres, M.. Universidade Federal Do Sao Carlos; Brasil
dc.description.fil
Fil: Kiminami, C.. Universidade Federal Do Sao Carlos; Brasil
dc.description.fil
Fil: Botta, W. J.. Universidade Federal Do Sao Carlos; Brasil
dc.description.fil
Fil: Bolfarini, C.. Universidade Federal Do Sao Carlos; Brasil
dc.journal.title
Journal Of Alloys And Compounds
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0925838813015600
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jallcom.2013.06.162
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