The effect of FSW on microstructure and intergranular corrosion of the AA2198- T8 alloy
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2018
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 23.
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In this investigation, the intergranular corrosion (IGC) resistance of the AA2198-T8
alloy welded by friction stir welding (FSW) was investigated by ASTM G110-97 test.
The different zones resulting from FSW showed distinct resistances to intergranular
attack depending on the heating and/or mechanical effects produced by welding. The
base metal (BM) was the most susceptible to IGC whereas the thermomechanically
affected zone (TMAZ) and the stir zone (SZ), presented the highest resistances to IGC
comparatively to the other zones. The results of IGC tests were correlated with those
of thermal simulation, microhardness measurements, transmission electron
microscopy (TEM) and optical microscopy (OM). The dissimilarities in corrosion
resistance of the various zones were associated to differences in hardening phase
quantities between the various zones. In the BM and HAZ, T1 phase, the main
hardening phase, was found at grain boundaries and it resulted in IGC susceptibility.
The slight IGC observed in the SZ and TMAZ was not associated with T1 phase which
was rarely found but to another precipitate (T2 phase) which was found preferentially
located at the grain boundaries in these zones.
Como referenciar
MACHADO, C.S.C.; DONATUS, U.; ARAUJO, J.V.S.; KLUMPP, R.E.; MILAGRE, M.X.; GIORJAO, R.A.R.; MOGILI, N.V.V.; COSTA, I. The effect of FSW on microstructure and intergranular corrosion of the AA2198- T8 alloy. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 23., 04-08 de novembro, 2018, Foz do Iguaçu, PR. Resumo... p. 5162-5162. Disponível em: http://repositorio.ipen.br/handle/123456789/29571. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.