Misorientation distribution between martensite and austenite in Fe-31 wt%Ni-0.01 wt%C

Autor(es)

Zilnyk, K. D. ^{[1, 2]} ; Almeida Junior, D. R. ^[1] ; Sandim, H. R. Z. ^[1] ; Rios, P. R. ^[3] ; Raabe, D. ^[4]

Afiliação do(s) autor(es)

^[1] Escola Engn Lorena USE, BR-12602810 Lorena, SP - Brazil

^[2] Inst Fed Sao Paulo, BR-18202000 Itapetininga, SP - Brazil

^[3] UFF, Escola Engn Ind Met, BR-27255725 Volta Redonda, RJ - Brazil

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

• Tipo de documento: Artigo Científico
• Fonte: ACTA MATERIALIA; v. 143, p. 227-236, JAN 15 2018.
• Citações Web of Science: 4

Resumo

We characterized the morphology, substructure and crystallography of lenticular martensite in a Fe-Ni-C alloy by means of electron backscatter diffraction and scanning electron microscopy. Electron backscatter diffraction maps were used to determine the orientation relationship between austenite and martensite across large regions of the microstructure. We employed orientation distribution functions as a statistical representation method for the observed orientation relationships. High-resolution point-to-point scans were used to normalize the effects of the orientation changes in the austenite caused by the plastic deformation during the formation of lenticular martensite. The analysis revealed that most of the transformation in this material follows an orientation relationship close to the one proposed by Greninger and Troiano. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/23304-8 - Influência de parâmetros de austenitização na transformação martensítica e nas relações de orientação gama/alfa-linha em aços ferrítico-martensíticos para uso nuclear
• Beneficiário: Kahl Dick Zilnyk
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• 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