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dc.contributor.author
Audebert, Fernando Enrique  
dc.contributor.author
Galano, Marina Lorena  
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Triveño Rios, C.  
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Kasama, H.  
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Peres, M.  
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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  
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  
dc.subject.classification
Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
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  
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  
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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  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0925838813015600  
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jallcom.2013.06.162