Study of microstructural evolution and its effects on magnetic and electric properties of two stainless steels (ODS-Eurofer and AISI 201)

• Grant number: 13/26506-8
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2014
• End date: May 31, 2016
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Maria Jose Ramos Sandim
• Grantee: Maria Jose Ramos Sandim
• Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil

Abstract

This project aims to investigate the microstructural evolution and its effects on magnetic and electric properties of two distinct stainless steels: ODS-Eurofer steel and AISI 201 steel. ODS-Eurofer ferritic-martensitic steel is a potential candidate for structural applications in fusion reactors. AISI 201 austenitic stainless steel replaces AISI 304 steel in applications that demand a lower corrosion resistance. Regarding ODS-Eurofer steel, the focus of this study relies on the behavior of 80% rolled material with further annealing in high temperatures (between 1200oC and 1350oC), when possibly occurs the coalescence of fine Y2O3 particles. Regarding AISI 201 steel, the study relies on the deformation induced martensite and its reversion, with emphasis on this last phenomenon and its relation with the recrystallization of this material. After thickness reduction as high as 60%, the AISI 201 steel will be annealed at several temperatures up to 800oC. Concerning magnetic and electric properties the main parameters to be evaluated are the coercive field and residual electrical resistivity, respectively. Magnetic and electric measurements are very sensitive to microstructural changes. In addition, the samples will be also characterized by the following techniques: Vickers microhardness testing, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction, and electron backscattered diffraction (EBSD). (AU)

Scientific publications

(7)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GAUSS, C.; SOUZA FILHO, I. R.; SANDIM, M. J. R.; SUZUKI, P. A.; RAMIREZ, A. J.; SANDIM, H. R. Z.. In situ synchrotron X-ray evaluation of strain-induced martensite in AISI 201 austenitic stainless steel during tensile testing. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 651, p. 507-516, JAN 10 2016. (13/26506-8)

SANDIM, M. J. R.; RENZETTI, R. A.; BORMIO-NUNES, C.; SANDIM, H. R. Z.. Magnetic characterization of ODS-Eurofer steel: Remanent magnetization and magnetostriction behavior. FUSION ENGINEERING AND DESIGN, v. 126, p. 5-9, JAN 2018. (13/26506-8, 13/19197-9)

SOUZA FILHO, I. R.; ZILNYK, K. D.; SANDIM, M. J. R.; BOLMARO, R. E.; SANDIM, H. R. Z.. Strain partitioning and texture evolution during cold rolling of AISI 201 austenitic stainless steel. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 702, p. 161-172, AUG 15 2017. (13/26506-8)

SANDIM, M. J. R.; SOUZA FILHO, I. R.; BREDDA, E. H.; KOSTKA, A.; RAABE, D.; SANDIM, H. R. Z.. Short Communication on "Coarsening of Y-rich oxide particles in 9% Cr-ODS Eurofer steel annealed at 1350(A)over-cap (A)over-cap degrees C". JOURNAL OF NUCLEAR MATERIALS, v. 484, p. 5-pg., 2017-02-01. (13/26506-8, 13/19197-9)

SANDIM, M. J. R.; SOUZA FILHO, I. R.; BREDDA, E. H.; KOSTKA, A.; RAABE, D.; SANDIM, H. R. Z.. Short Communication on ``Coarsening of Y-rich oxide particles in 9% Cr-ODS Eurofer steel annealed at 1350(A)over-cap (A)over-cap degrees C{''}. JOURNAL OF NUCLEAR MATERIALS, v. 484, p. 283-287, FEB 2017. (13/26506-8, 13/19197-9)

SOUZA FILHO, I. R.; SANDIM, M. J. R.; COHEN, R.; NAGAMINE, L. C. C. M.; HOFFMANN, J.; BOLMARO, R. E.; SANDIM, H. R. Z.. Effects of strain-induced martensite and its reversion on the magnetic properties of AISI 201 austenitic stainless steel. Journal of Magnetism and Magnetic Materials, v. 419, p. 156-165, DEC 1 2016. (13/26506-8)

SOUZA FILHO, I. R.; ALMEIDA JUNIOR, D. R.; GAUSS, C.; SANDIM, M. J. R.; SUZUKI, P. A.; SANDIM, H. R. Z.. Austenite reversion in AISI 201 austenitic stainless steel evaluated via in situ synchrotron X-ray diffraction during slow continuous annealing. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v. 755, p. 267-277, MAY 7 2019. (13/26506-8)