Corrosion characterization of the 6061 Al-Mg-Si alloy in synthetic acid rain using neutron tomography

Mariana Xavier Milagre; Marco Stanojev Pereira; Antônio A Gomes; Marcos Scapin; Margareth Franco; Fabiano Yokaichiya; Frederico Genezini; Isolda Costa

doi:10.1016/j.apradiso.2022.110197

Corrosion characterization of the 6061 Al-Mg-Si alloy in synthetic acid rain using neutron tomography

Appl Radiat Isot. 2022 Jun:184:110197. doi: 10.1016/j.apradiso.2022.110197. Epub 2022 Mar 24.

Authors

Mariana Xavier Milagre¹, Marco Stanojev Pereira², Antônio A Gomes², Marcos Scapin², Margareth Franco², Fabiano Yokaichiya³, Frederico Genezini², Isolda Costa²

Affiliations

¹ Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN, Av. Prof. Lineu Prestes, 2242, São Paulo, Brazil. Electronic address: marianamilagre@yahoo.com.br.
² Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN, Av. Prof. Lineu Prestes, 2242, São Paulo, Brazil.
³ Universidade Federal do Paraná, UFPR, Rua XV de Novembro, 1299, Curitiba, Brazil.

PMID: 35354110
DOI: 10.1016/j.apradiso.2022.110197

Abstract

Neutron tomography has gained increasing importance as an imaging technique for materials characterization. In general, neutron beams are able to show microstructure features of hydrogenous materials, even enfolded with thick metal layers. In the present paper, neutron tomography and observation of cross section images were successfully applied to investigate the corrosion features of the 6061 Al-Mg-Si alloy. The results showed good agreement between neutron 3D tomography and the cross section images obtained in the high attenuation areas of the samples, whereas significant differences in depth of corrosion penetration were obtained between the results from Neutron Tomography and 3D optical profilometry.

Keywords: 3D neutron tomography; 3D optical profilometry; Aluminum alloy; Exfoliation; Localized corrosion.