Effects of mechanical agitation and of the addition of grain refiner on the microstructure and mechanical properties of castings of the Al-Sn alloy.

dc.creatorOsorio, WR
dc.creatorPeixoto, LC
dc.creatorGarcia, A
dc.date2009
dc.date2014-07-30T17:21:37Z
dc.date2015-11-26T17:52:38Z
dc.date2014-07-30T17:21:37Z
dc.date2015-11-26T17:52:38Z
dc.date.accessioned2018-03-29T00:36:09Z
dc.date.available2018-03-29T00:36:09Z
dc.identifierMateria-rio De Janeiro. Univ Fed Rio De Janeiro, Lab Hidrogenio, v. 14, n. 3, n. 906, n. 917, 2009.
dc.identifier1517-7076
dc.identifierWOS:000276738700003
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65011
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65011
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290308
dc.descriptionThe aim of this article was to evaluate the effects of mechanical stirring and grain refiner addition in three different Al-10wt% Sn casting alloys on their resulting macro and microstructures and mechanical properties. These samples were obtained by using: i) die casting, ii) casting with mechanical stirring, iii) die casting using grain refiner (master alloy Al-5wt% Ti-1wt% B) and iv) die casting with grain refiner and mechanical stirring. Experimental results presented different mean grain sizes and different cooling rates when different casting procedures were applied. Cellular and dendritic morphologies were observed when ranges of cooling rates of about 0.6 to 0.75 degrees C/s and of 1.75 to 2.55 degrees C/s were employed, respectively. Porosity levels of all studied alloy samples were also analyzed. Results of the mechanical behavior, particularly, ultimate tensile strength, yield strength and specific elongation were correlated with mean grain sizes, dendritic arm and cellular spacings and porosity levels attained for the three different cast Al-10wt% Sn alloy samples. The control of the resulting microstructure of the as-cast product may be used as an alternative way to produce sound casting alloy components with improvement in the mechanical properties.
dc.description14
dc.description3
dc.description906
dc.description917
dc.languagept
dc.publisherUniv Fed Rio De Janeiro, Lab Hidrogenio
dc.publisherRio De Janeiro Rj
dc.publisherBrasil
dc.relationMateria-rio De Janeiro
dc.relationMateria
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectmechanical stirring
dc.subjectgrain refiner
dc.subjectporosity
dc.subjectAl-Sn alloys
dc.subjectmechanical property
dc.subjectUnsteady-state
dc.subjectSolidification Conditions
dc.subjectCorrosion-resistance
dc.subjectPb Alloys
dc.subjectSpacings
dc.subjectSi
dc.subjectParameters
dc.subjectBehavior
dc.subjectFlow
dc.subjectTi
dc.titleEffects of mechanical agitation and of the addition of grain refiner on the microstructure and mechanical properties of castings of the Al-Sn alloy.
dc.typeArtículos de revistas


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