Microstructural and Fractographic Characterization of a Thermally Embrittled Nuclear Grade Steel: Part I - Annealing

Autor(es)

José R. Tarpani ^[1] ; Maria H.P. Braz ^[2] ; Waldek W. Bose Filho ^[3] ; Dirceu Spinelli ^[4]

Afiliação do(s) autor(es)

^[1] University of São Paulo. Engineering School of São Carlos - Brasil

^[2] University of São Paulo. Engineering School of São Carlos - Brasil

^[3] University of São Paulo. Engineering School of São Carlos - Brasil

^[4] University of São Paulo. Engineering School of São Carlos - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 5, n. 3, p. 357-364, 2002-09-00.

Resumo

A nuclear reactor pressure vessel steel was submitted to different annealing heat treatments aimed at simulating neutron irradiation damage. The obtained microstructures were mechanically tested with subsequent metallographic and fractographic characterization. The relevant microstructural and fractographic aspects were employed in the interpretation of the mechanical behavior of the microstructures in both quasi-static (J-R curve) and dynamic (Charpy impact) loading regimes. A well defined relationship was determined between the elastic-plastic fracture toughness parameter J-integral and the Charpy impact energy for very most of the microstructures. (AU)

• Processo FAPESP: 97/05652-1 - Aplicacao da mecanica da fratura em simulacoes de danos por irradiacao de vasos nucleares internamente pressurizados.
• Beneficiário: José Ricardo Tarpani
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 99/09431-5 - Propriedades de tenacidade ao impacto instrumentado Charpy de um aço de grau nuclear
• Beneficiário: Dirceu Spinelli
• Modalidade de apoio: Auxílio à Pesquisa - Regular