Influence of indirect ultrasonic vibration on the microstructure and mechanical behavior of Al-Si-Cu alloy

doi:10.1016/j.msea.2012.09.106

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/24847

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Campo DC	Valor	Idioma
dc.contributor.author	Puga, Hélder	-
dc.contributor.author	Barbosa, J.	-
dc.contributor.author	Costa, Sónia	-
dc.contributor.author	Ribeiro, Carlos Silva	-
dc.contributor.author	Pinto, A. M. P.	-
dc.contributor.author	Prokic, Miodrag	-
dc.date.accessioned	2013-07-29T12:02:04Z	-
dc.date.available	2013-07-29T12:02:04Z	-
dc.date.issued	2013	-
dc.identifier.issn	0921-5093	-
dc.identifier.uri	https://hdl.handle.net/1822/24847	-
dc.description.abstract	The influence of high intensity ultrasound (US) propagating through a steel mold on the microstructure and mechanical properties of die-cast AlSi9Cu3, for different levels of electric power and at different distances to the waveguide/mold interface. The influence of those parameters on the morphology of -Al and eutectic Si and on the volume of porosity were investigated and characterized. The morphological characterization revealed that the high intensity vibration not only promoted the formation of small -Al globular grains but also modify the eutectic silicon, as well as decreased the volume of porosity. Besides microstructure modification, US treatment improved the alloy mechanical properties, namely UTS and strain, which maximum values were 339 MPa and 2.9% respectively by comparison to the values obtained for castings produced without US vibration. A mechanism of eutectic Si modification based on theoretical-experimental analysis is proposed	por
dc.description.sponsorship	FCT - Fundação para a Ciência e Tecnologia	por
dc.language.iso	eng	por
dc.publisher	Elsevier Science	por
dc.rights	openAccess	por
dc.subject	Aluminium alloys	por
dc.subject	Casting	por
dc.subject	Nucleation	por
dc.subject	Mechanical properties	por
dc.subject	Ultrasound	por
dc.subject	Ultrasonic vibration	por
dc.subject	Si modification	por
dc.subject	Mechanical characterization	por
dc.subject	Aluminum alloys	por
dc.title	Influence of indirect ultrasonic vibration on the microstructure and mechanical behavior of Al-Si-Cu alloy	por
dc.type	article	por
dc.peerreviewed	yes	por
sdum.publicationstatus	published	por
oaire.citationStartPage	589	por
oaire.citationEndPage	595	por
oaire.citationVolume	560	por
dc.identifier.doi	10.1016/j.msea.2012.09.106	por
dc.subject.wos	Science & Technology	por
sdum.journal	Materials Science and Engineering: A	por
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