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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.)

Stacking fault energy measurements in solid solution strengthened Ni-Cr-Fe alloys using synchrotron radiation

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Author(s):
Unfried-Silgado, Jimy [1, 2, 3] ; Wu, Leonardo [1] ; Ferreira, Fabio Furlan [4] ; Mario Garzon, Carlos [5] ; Ramirez, Antonio J. [1]
Total Authors: 5
Affiliation:
[1] Brazilian Nanothecnol Natl Lab CNPEM ABTLuS, Met Characterizat & Proc Lab, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas UNICAMP, FEM, Campinas, SP - Brazil
[3] Univ Autonoma Caribe, Grp IMTEF, Barranquilla - Colombia
[4] Univ Fed ABC, CCNH, Sao Paulo - Brazil
[5] Univ Nacl Colombia, Dept Fis, Bogota - Colombia
Total Affiliations: 5
Document type: Journal article
Source: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 558, p. 70-75, DEC 15 2012.
Web of Science Citations: 9
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. (AU)

FAPESP's process: 06/05661-1 - Study of intergranular fracture mechanism by ductility reduction in Ni-Cr-Fe alloys
Grantee:Jimy Unfried Silgado
Support Opportunities: Scholarships in Brazil - Doctorate