Effect of aging heat treatment H950 and H1000 on mechanical and pitting corrosion properties of uns s46500 stainless steel

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dc.contributor.authorBERALDO, C. H.
dc.contributor.authorCALDERON-HERNANDEZ, J. W.
dc.contributor.authorRodrigo Magnabosco
dc.contributor.authorALONSO-FALLEIROS, N.
dc.contributor.authorOrcidhttps://orcid.org/0000-0003-0559-7224
dc.date.accessioned2022-07-01T06:04:37Z
dc.date.available2022-07-01T06:04:37Z
dc.date.issued2018-01-05
dc.description.abstract© 2018 Universidade Federal de Sao Carlos. All rights reserved.The effect of aging temperature on mechanical and pitting corrosion properties of UNS S46500 was investigated. Tensile and Hardness tests were carried out and the microstructure was analyzed by optical microscopy, scanning electron microscopy and X-ray diffraction; Thermo-Calc simulations helped in the phase identification. Pitting corrosion properties were investigated in 0.6M NaCl electrolyte with sulfate additions by Potentiodynamic Polarization (PP). Hardness, tensile and yield strength of the UNS S46500 steel after lower aging temperature, 510ºC (H950), are higher than the ones found in the 538ºC (H1000) aged steel.This result is explained by microstructure, X-ray diffraction and Thermo-Calc analysis, which indicated the presence of austenite, chi phase and probably Ni3Ti precipitates finely and uniform distributed throughout the martensite matrix. Pitting corrosion resistance is equivalent in both aging temperatures. The sulfate inhibitor effect on UNS S46500 steel was enhanced for 538ºC condition when the electrolyte reaches 1Cl-:1SO4 2- ratio, which is explained by Ni sulfate adsorption and the amount of interfaces in the microstructure resulting in smaller amount of adsorption sites, such as coarsened Ni3Ti precipitates, smaller fraction of chi phase and recovery of dislocations in martensite structure.
dc.description.issuenumber1
dc.description.volume22
dc.identifier.citationBERALDO, C. H.; CALDERON-HERNANDEZ, J. W.; MAGNABOSCO, R.; ALONSO-FALLEIROS, N. Effect of aging heat treatment H950 and H1000 on mechanical and pitting corrosion properties of uns s46500 stainless steel. Materials Research, v. 22, n. 1, 2018.
dc.identifier.doi10.1590/1980-5373-MR-2017-0804
dc.identifier.issn1980-5373
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4529
dc.relation.ispartofMaterials Research
dc.rightsAcesso Aberto
dc.rights.licenseCreative Commons "Este é um artigo publicado em acesso aberto sob uma licença Creative commons (CC BY 4.0). Fonte: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056544148&origin=inward. Acesso em: 01 julho 2022.
dc.subject.otherlanguageAging heat treatment
dc.subject.otherlanguageMartensitic precipitation hardening stainless steel
dc.subject.otherlanguagePitting corrosion.
dc.titleEffect of aging heat treatment H950 and H1000 on mechanical and pitting corrosion properties of uns s46500 stainless steel
dc.typeArtigo
fei.scopus.citations3
fei.scopus.eid2-s2.0-85056544148
fei.scopus.subjectAging heat treatment
fei.scopus.subjectAging temperatures
fei.scopus.subjectCorrosion property
fei.scopus.subjectInhibitor effects
fei.scopus.subjectMartensite structures
fei.scopus.subjectMartensitic precipitation hardening
fei.scopus.subjectPhase identification
fei.scopus.subjectSulfate adsorption
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056544148&origin=inward
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