Magnetic characterization of ODS-Eurofer steel: Remanent magnetization and magnetostriction behavior

Autor(es)

Sandim, M. J. R. ^[1] ; Renzetti, R. A. ^{[1, 2]} ; Bormio-Nunes, C. ^[1] ; Sandim, H. R. Z. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Lorena Sch Engn, BR-12602810 Lorena - Brazil

^[2] Fed Univ Itajuba UNIFEI, BR-35903087 Itabira - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FUSION ENGINEERING AND DESIGN; v. 126, p. 5-9, JAN 2018.
• Citações Web of Science: 0

Resumo

Oxide dispersion strengthened ODS-Eurofer steel is a promising candidate for structural applications in future nuclear fusion reactors. Samples of 9Cr-ODS-Eurofer steel were cold rolled up to 80% thickness reduction and annealed up to 1350 degrees C for 1 h. The microstructural changes of the annealed samples were followed by magnetic measurements taken at room temperature. In comparison with the coercive field (H-c), the remanent magnetization (M-r) and longitudinal magnetostriction (lambda(long), 1 behaviors can be explained only if we assume some interaction between pinning sites and residual stresses in the material. It was found that H-c M-r,lambda(long)) and hardness display the same trend. At the expected fusion DEMO reactor operating conditions (around 650 degrees C and maximum magnetic field of 6 T), the magnetostrictive deformation would not surpass 15 ppm (15 mu m in 1 m). (AU)

• Processo FAPESP: 13/26506-8 - Estudo da evolução microestrutural e sua relação com propriedades magnéticas e elétricas de dois aços inoxidáveis (ODS-Eurofer e AISI 201)
• Beneficiário: Maria Jose Ramos Sandim
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/19197-9 - Estudo comparativo da transformação martensítica nos aços Eurofer-97 e ODS-Eurofer para uso em fusão nuclear
• Beneficiário: Hugo Ricardo Zschommler Sandim
• Modalidade de apoio: Auxílio à Pesquisa - Regular