Influence of iron addition on the microstructure and the electrochemical corrosion of Al-Zn-Mg alloys

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniv Barcelona
dc.contributorUFC
dc.date.accessioned2014-05-20T14:17:54Z
dc.date.available2014-05-20T14:17:54Z
dc.date.created2014-05-20T14:17:54Z
dc.date.issued2001-03-01
dc.identifierJournal of Applied Electrochemistry. Dordrecht: Kluwer Academic Publ, v. 31, n. 3, p. 293-300, 2001.
dc.identifier0021-891X
dc.identifierhttp://hdl.handle.net/11449/25365
dc.identifier10.1023/A:1017566002951
dc.identifierWOS:000167858900005
dc.description.abstractThe effect of Fe addition on the microstructural properties and the corrosion resistance of Al-Zn-Mg alloys submitted to different heat treatments (cast, annealed and aged), has been studied in chloride solutions using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), cyclic polarization (CP) and open circuit potential (o.c.p.) measurements. The presence of 0.3% Fe in the alloy limited the growth of the MgZn2 precipitates, both in the annealed and in the quenched specimens. No effect of Cr on the grain size in the presence of Fe was found because of the accumulation of Cr in the Fe-rich particles. Fe in the Al-Zn-Mg alloys also made them more susceptible to pitting. Pitting occurred mainly near the Fe-rich particles both, under o.c.p. conditions in O-2-saturated solutions and during the CP.
dc.languageeng
dc.publisherKluwer Academic Publ
dc.relationJournal of Applied Electrochemistry
dc.relation2.262
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectaluminium-based alloys
dc.subjectcorrosion
dc.subjectheat treatment
dc.titleInfluence of iron addition on the microstructure and the electrochemical corrosion of Al-Zn-Mg alloys
dc.typeArtículos de revistas


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