Annealing effects on microstructure and coercive field of ferritic-martensitic ODS Eurofer steel

Autor(es)

Renzetti, R. A. ^[1] ; Sandim, H. R. Z. ^[1] ; Sandim, M. J. R. ^[1] ; Santos, A. D. ^[2] ; Moeslang, A. ^[3] ; Raabe, D. ^[4]

Afiliação do(s) autor(es)

^[1] USP, Escola Engn Lorena, BR-12600970 Lorena, SP - Brazil

^[2] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo - Brazil

^[3] KIT, IMF I, D-72061 Karlsruhe - Germany

^[4] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf - Germany

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 528, n. 3, p. 1442-1447, JAN 25 2011.
• Citações Web of Science: 20

Resumo

Oxide dispersion strengthened reduced-activation ferritic-martensitic steels are promising candidates for applications in future fusion power plants. Samples of a reduced activation ferritic-martensitic 9 wt.%Cr-oxide dispersion strengthened Eurofer steel were cold rolled to 80% reduction in thickness and annealed in vacuum for 1 h from 200 to 1350 degrees C to evaluate its thermal stability. Vickers microhardness testing and electron backscatter diffraction (EBSD) were used to characterize the microstructure. The microstructural changes were also followed by magnetic measurements, in particular the corresponding variation of the coercive field (H(c)), as a function of the annealing treatment. Results show that magnetic measurements were sensitive to detect the changes, in particular the martensitic transformation, in samples annealed above 850 degrees C (austenitic regime). (C) 2010 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 07/56436-0 - Encruamento, recuperacao e recristalizacao de um aco ferritico-martensitico (ods-eurofer) endurecido por dispersao de oxidos visando aplicacoes no reator de fusao nuclear iter.
• Beneficiário: Hugo Ricardo Zschommler Sandim
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 08/54064-1 - Estudo comparativo da recristalização de dois aços da família EUROFER (9%Cr e 13%cr) endurecidos por dispersão de óxidos
• Beneficiário: Reny Angela Renzetti
• Modalidade de apoio: Bolsas no Brasil - Doutorado