Microstructure and pitting corrosion resistance of quenched, single tempered and double tempered aisi 420 martensitic stainless steel

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dc.creatorCláudio Moreira de Alcântara
dc.creatorAriane Neves de Moura
dc.creatorMarcos Tadeu D’Azeredo Orlando
dc.creatorWilian da Silva Labiapari
dc.creatorMarco Antônio da Cunha
dc.creatorTarcísio Reis de Oliveira
dc.creatorVicente Tadeu Lopes Buono
dc.date.accessioned2023-07-27T18:56:53Z
dc.date.accessioned2025-09-09T00:53:23Z
dc.date.available2023-07-27T18:56:53Z
dc.date.issued2021
dc.identifier.doihttps://doi.org/10.1590/1980-5373-MR-2021-0093
dc.identifier.issn1980-5373
dc.identifier.urihttps://hdl.handle.net/1843/57087
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMaterials Research
dc.rightsAcesso Aberto
dc.subjectAço inoxidavel
dc.subjectCorrosão
dc.subject.otherMartensitic stainless steel
dc.subject.otherOrientation relationship
dc.subject.otherGreninger-Troiano
dc.subject.otherPitting corrosion resistance
dc.titleMicrostructure and pitting corrosion resistance of quenched, single tempered and double tempered aisi 420 martensitic stainless steel
dc.typeArtigo de periódico
local.citation.epage11
local.citation.issue6
local.citation.spage1
local.citation.volume24
local.description.resumoThe crystallographic aspects after air-quenching treatment and the pitting corrosion resistance after single tempering and double tempering treatments of AISI 420 martensitic stainless steel were studied using optical microscopy, Electron Backscatter Diffraction and potentiodynamic polarization tests. The results showed that the observed average orientation relationship (OR) was closer to the Greninger-Troiano (G-T) OR model with a minimum average deviation of 2.66°. The average OR of AISI 420 steel with respect to austenite matrix was φ1 = 3.6°, Φ = 46.0°, φ2 = 6.2° in the area mapped. Blocks showed variant pairs belonging to the same Bain group forming sub-blocks with misorientation 5.51° <6 0 11> (V1/V4 pair), consequently, the AISI 420 martensitic stainless steel showed higher intervariant boundary density for the same Bain group and close-packed plane group. In the same air-quenching condition, the different sizes of prior austenite grain in the microstructure did not influence the variant selection. The air-quenching and single tempering treatments did not impair the pitting corrosion resistance and did not cause significant loss of hardness in relation to the air-quenched treatment. Therefore, the double tempering should be dispensed saving production costs.
local.identifier.orcidhttp://orcid.org/0000-0002-1432-6859
local.identifier.orcidhttp://orcid.org/0000-0002-8387-6504
local.identifier.orcidhttp://orcid.org/0000-0003-2546-1877
local.identifier.orcidhttp://orcid.org/0000-0002-0574-5218
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA
local.publisher.initialsUFMG
local.url.externahttps://www.scielo.br/j/mr/a/ZKhLwHMPvs9JYgHM7Y4hgwd/?lang=en#

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