Effect of volume fraction of phases and precipitates on the mechanical behavior of UNS S31803 duplex stainless steel.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorLacerda, José Carlos de-
Autor(es): dc.creatorCândido, Luiz Cláudio-
Autor(es): dc.creatorGodefroid, Leonardo Barbosa-
Data de aceite: dc.date.accessioned2019-11-06T13:34:23Z-
Data de disponibilização: dc.date.available2019-11-06T13:34:23Z-
Data de envio: dc.date.issued2015-05-15-
Data de envio: dc.date.issued2015-05-15-
Data de envio: dc.date.issued2015-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/5347-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/558399-
Descrição: dc.descriptionMechanical properties of a grade UNS S31803 duplex stainless steel were studied. Samples were annealed at three different temperatures, 1060 C, 1200 C, and 1300 C, to change the a/c proportion, to precipitate undesirable phases (for example, a0 , r and chromium nitrides), and to study the effect of the microstructure on the mechanical behavior. Specimens with a thickness of 1.8 mm were prepared according to ASTM standards and tested at room temperature. Tensile tests were conducted using displacement control at a rate of 5 mm/min. Force-controlled constant amplitude axial fatigue tests were conducted at a frequency of 30 Hz and an R stress ratio of 0.1. Microstructural analyses, performed by optical microscopy and scanning electron microscopy, showed the following modifications to the microstructure: changes in the phase volume fractions, the phase grain growths, and the morphology of the c-phase and the precipitation of chromium nitrides in the a-phase. The mechanical properties of the steel were significantly changed due to the changed microstructure. The results demonstrate the sensitivity of the steel to the annealing temperature.-
Idioma: dc.languageen-
Direitos: dc.rightsO Periódico International Journal of Fatigue concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3624211041567.-
Palavras-chave: dc.subjectDuplex stainless steel-
Palavras-chave: dc.subjectMicrostructure-
Palavras-chave: dc.subjectTensile and fatigue tests-
Título: dc.titleEffect of volume fraction of phases and precipitates on the mechanical behavior of UNS S31803 duplex stainless steel.-
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