Microstructural and Fractographic Characterization of a Thermally Embrittled Nuclear Grade Steel: Part II - Quenching and Tempering

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. 365-371, 2002-09-00.

Resumo

A nuclear reactor pressure vessel steel was submitted to different quenching and tempering heat treatments aimed at simulating neutron irradiation damage. The obtained microstructures were mechanically tested and submitted to metallographic and fractographic survey. The relevant microstructural and fractographic aspects were employed in the interpretation of the mechanical performance of the thermally embrittled microstructures. A well defined correlation was determined between the elastic-plastic fracture toughness parameter J-integral and the Charpy impact energy, which was achieved for some of the Q&T 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