Microstructural and mechanical characterization of gray cast iron and AlSi alloy after laser beam hardening

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dc.contributor.authorMonteiro W.A.
dc.contributor.authorSilva E.M.R.
dc.contributor.authorSilva L.V.
dc.contributor.authorDe Rossi W.
dc.contributor.authorBuso S.J.
dc.date.accessioned2024-03-13T01:33:16Z
dc.date.available2024-03-13T01:33:16Z
dc.date.issued2010
dc.description.abstractA localized source of heat, such as that of laser beam, can provide a convenient means of producing a surface layer of altered microstructure. By using surface hardening treatment, wear resistance can be increased. Experiments were performed using a Nd:YAG pulsed laser under different processing conditions. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray mapping (SEM) were employed to observe the effect of laser melting treatment on the microstructural properties of the samples. Depending on the selected laser treatment working conditions, different microstructures characteristics of surface melting can be achieved in the treated zone. Higher microhardness values were found at the treated area showing a superficial hardening of the sample and, consequently, an improvement of the wear resistance of these automotive alloys. The aim of this work is to find the optimal process parameters and to evaluate the characteristics of the laser superficial hardening (LSH) in a pearlitic gray iron and Al-Si alloy used in an automobile industry (bearing and piston materials in automotive industry). © (2010) Trans Tech Publications.
dc.description.firstpage769
dc.description.lastpage774
dc.description.volume638-642
dc.identifier.doi10.4028/www.scientific.net/MSF.638-642.769
dc.identifier.issn1662-9752
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37280
dc.relation.ispartofMaterials Science Forum
dc.rightsAcesso Restrito
dc.subject.otherlanguageAl-Si alloy
dc.subject.otherlanguageCharacterization
dc.subject.otherlanguageElectron microscopy
dc.subject.otherlanguageGray cast iron
dc.subject.otherlanguageNd:YAG pulsed laser
dc.subject.otherlanguageSurface hardening treatment
dc.titleMicrostructural and mechanical characterization of gray cast iron and AlSi alloy after laser beam hardening
dc.typeArtigo de evento
local.scopus.citations7
local.scopus.eid2-s2.0-75849159165
local.scopus.subjectAl-Si alloy
local.scopus.subjectEnergy dispersive spectroscopies (EDS)
local.scopus.subjectGray cast iron
local.scopus.subjectHardening treatment
local.scopus.subjectMechanical characterizations
local.scopus.subjectMicro-structural properties
local.scopus.subjectNd:YAG pulsed laser
local.scopus.subjectProcessing condition
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=75849159165&origin=inward
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