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Type: Artigo de periódico
Title: Stacking fault energy measurements in solid solution strengthened Ni-Cr-Fe alloys using synchrotron radiation
Author: Unfried-Silgado, J
Wu, L
Ferreira, FF
Garzon, CM
Ramirez, AJ
Abstract: The stacking fault energy (SFE) in a set of experimental Ni-Cr-Fe alloys was determined using line profile analysis on synchrotron X-ray diffraction measurements. The methodology used here is supported by the Warren-Averbach calculations and the relationships among the stacking fault probability (alpha) and the mean-square microstrain (<epsilon(2)(L)>). These parameters were obtained experimentally from cold-worked and annealed specimens extracted from the set of studied Ni-alloys. The obtained results show that the SFE in these alloys is strongly influenced by the kind and quantity of addition elements. Different effects due to the action of carbide-forming elements and the solid solution hardening elements on the SFE are discussed here. The simultaneous addition of Nb, Hf, and, Mo, in the studied Ni-Cr-Fe alloys have generated the stronger decreasing of the SFE. The relationships between SFE and the contributions on electronic structure from each element of additions were established. (C) 2012 Elsevier B.V. All rights reserved.
Subject: Synchrotron X-ray diffraction
Ni-based alloys
Bulk deformation
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.msea.2012.07.072
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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