Influence of Post-Weld Heat Treatment on the Mechanical Properties and Microstructure of a Seamless Pipe of an ASTM A335 Gr P91 Steel

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorGEA Research Group-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBento, Emerson André Pinto-
Autor(es): dc.creatorTorres, Edwar Andrés-
Autor(es): dc.creatorChemin, Aline Emanuelle Albuquerque-
Autor(es): dc.creatorDos Santos Maciel, Carla Isabel-
Autor(es): dc.creatorCaselatto, Alexandre Lourenção-
Autor(es): dc.creatorRuchert, Cassius Olívio Figueiredo Terra-
Autor(es): dc.creatorAvila, Julian Arnaldo-
Data de aceite: dc.date.accessioned2025-08-21T15:53:12Z-
Data de disponibilização: dc.date.available2025-08-21T15:53:12Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2024-0544-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300652-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300652-
Descrição: dc.descriptionThis study investigates the effects of different post-weld heat treatments (PWHT) on the mechanical properties and microstructure of ASTM 335 Gr P91 martensitic steel, commonly used in boiler applications. Mechanical tests were conducted at room temperature, 300°C, and 600°C. Two PWHT conditions were applied: (i) PWHT-1, involving a 300°C isothermal treatment followed by heating to 770°C, and (ii) PWHT-2, following the same profile but without cooling to room temperature after the initial isothermal step. The resulting microstructure exhibited martensitic features, with a gradient of prior austenite grain boundaries in the heat-affected zone (HAZ) and δ-ferrite formation in the fusion zone (FZ), reducing toughness. Ultimate tensile strength decreased with increasing temperature, ranging from 675–750 MPa (RT), 525–615 MPa (300°C), and 375–440 MPa (600°C). Elongation was highest at 600°C (BM: 25–30%, FZ: 8–20%), decreasing at room temperature (BM: 20–25%, FZ: 2–12%). Toughness tests showed crack propagation across BM, HAZ, and FZ, with the lowest energy absorption in FZ (0.05–0.4 mm, 12–50 J). At 600°C, toughness decreased in BM and HAZ but increased in FZ, suggesting a change in deformation mechanisms at elevated temperatures.-
Descrição: dc.descriptionUniversidade de São Paulo (USP) Departamento de Engenharia de Materiais, Av. João Dagnone, 1100, Jd. Santa Angelina, SP-
Descrição: dc.descriptionUniversidad de Antioquia Department of Mechanical Engineering GEA Research Group-
Descrição: dc.descriptionUniversidade Estadual de Campinas (UNICAMP) Faculdade de Engenharia Mecânica Cidade Universitária Zeferino Vaz, Campinas, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista (UNESP) Faculdade de Engenharia, Campus São João da Boa Vista, Av. Profª Isette Corrêa Fontão, 505, Jardim das Flores, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista (UNESP) Faculdade de Engenharia, Campus São João da Boa Vista, Av. Profª Isette Corrêa Fontão, 505, Jardim das Flores, SP-
Idioma: dc.languageen-
Relação: dc.relationMaterials Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHigh-Temperature Performance-
Palavras-chave: dc.subjectMartensitic CrMo Steel-
Palavras-chave: dc.subjectMechanical Properties-
Palavras-chave: dc.subjectMicrostructure Evolution-
Palavras-chave: dc.subjectPost-Weld Heat Treatment (PWHT)-
Título: dc.titleInfluence of Post-Weld Heat Treatment on the Mechanical Properties and Microstructure of a Seamless Pipe of an ASTM A335 Gr P91 Steel-
Tipo de arquivo: dc.typelivro digital-
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