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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reconstructing the austenite parent microstructure of martensitic steels: A case study for reduced-activation Eurofer steels

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Almeida Junior, D. R. [1] ; Zilnyk, K. D. [2] ; Raabe, D. [3] ; Sandim, H. R. Z. [1]
Total Authors: 4
[1] Univ Sao Paulo, EEL, Lorena Sch Engn, BR-12602810 Lorena, SP - Brazil
[2] ITA, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[3] MPI E, D-40237 Dusseldorf - Germany
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF NUCLEAR MATERIALS; v. 516, p. 185-193, APR 1 2019.
Web of Science Citations: 0

A computer program was employed to reconstruct the parent microstructure from electron backscatter diffraction maps taken from martensite. The reconstruction is based on a given user-selected orientation relationship. Two reduced-activation ferritic-martensitic Eurofer steels were austenitized for several times and cooled down at different rates. Two parameters are proposed to assess the quality of the reconstruction: the relative frequency of orientations in a determined sub-portion of the Euler space and the distribution of the angular deviation from a given theoretical orientation relationship. The number of active martensitic orientation variants during the transformation depends on grain size. Coarser grains enable a greater number of active variants improving the reconstruction quality. The distributions of angular deviations reveal that the Greninger-Troiano orientation relationship is the one that best describes the martensitic transformation in both steel grades. (C) 2019 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 14/23304-8 - Effects of austenitizing parameters on martensitic transformation and orientation relationships gamma/alpha-prime in ferritic-martensitic steels for nuclear applications
Grantee:Kahl Dick Zilnyk
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/19197-9 - Comparative study on martensitic transformation in Eurofer-97 and ODS-Eurofer steels for nuclear fusion application
Grantee:Hugo Ricardo Zschommler Sandim
Support Opportunities: Regular Research Grants