Comprehensive analysis of ordering in CoCrNi and CrNi2 alloys
Chemical Short-Range Order (CSRO) has attracted recent attention from many researchers, creating intense debates about its impact on material properties. The challenges lie in confirming and quantifying CSRO, as its detection proves exceptionally demanding, contributing to conflicting data in the literature regarding its true effects on mechanical properties. Our work uses high-precision calorimetric data to unambiguously prove the existence and, coupled with atomistic simulations, quantify the type of CSRO. This methodology allows us to propose a mechanism for its formation and destruction based on the heat evolution during thermal analysis and facilitates a precise identification of local ordering in CoCrNi alloys. Samples of CoCrNi (Co<sub>33</sub>Cr<sub>33</sub>Ni<sub>33</sub>) and CrNi<sub>2</sub> (Cr<sub>33</sub>Ni<sub>66</sub>) alloys are fabricated in varying ordered states, extensively characterized via synchrotron X-ray diffraction, X-ray absorption spectroscopy, and transmission electron microscopy. Samples with considerably different ordered states are submitted to tensile tests with in-situ synchrotron X-ray diffraction. We demonstrate, despite inducing varied CSRO levels in CoCrNi, no significant alterations in overall mechanical behavior emerge. However, the CrNi<sub>2</sub> alloy, which undergoes long-range ordering, experiences significant shifts in yield strength, ultimate tensile stress and ductility.
Authors
- Andrea Fantin
- Guilherme Yuuki Koga (ORCID: https://orcid.org/0000-0003-0792-1139)
- Michael Widom (ORCID: https://orcid.org/0000-0001-5972-5696)
- D.B. Miracle (ORCID: https://orcid.org/0000-0002-7473-0351)
- Rodrigo Freitas (ORCID: https://orcid.org/0000-0001-8523-2916)
- Vinícius Pereira Bacurau (ORCID: https://orcid.org/0000-0003-0076-4097)
- Guilherme Cardeal Stumpf (ORCID: https://orcid.org/0000-0002-9457-1968)
- Gustavo Bertoli (ORCID: https://orcid.org/0000-0002-6336-6072)
- Angelo F. Andreoli (ORCID: https://orcid.org/0000-0002-4724-6759)
- Piter Gargarella (ORCID: https://orcid.org/0000-0003-4445-5819)
- Eric Marchezini Mazzer (ORCID: https://orcid.org/0000-0001-9208-2047)
- Francisco Gil Coury (ORCID: https://orcid.org/0000-0002-0457-2087)
- Santiago J. A. Figueroa (ORCID: https://orcid.org/0000-0003-2694-3050)
- P.A.F.P. Moreira (ORCID: https://orcid.org/0000-0003-2843-775X)
- Michael Kaufman (ORCID: https://orcid.org/0000-0001-9581-3335)
- Yifan Cao (ORCID: https://orcid.org/0009-0000-1292-329X)
- Flávio Fávaro de Assis
Institutions
- United States Air Force Research Laboratory (US)
- Federal Institute For Materials Research and Testing (DE)
- Colorado School of Mines (US)
- Universidade Federal de São Carlos (BR)
- Brazilian Synchrotron Light Laboratory (BR)
- Brazilian Center for Research in Energy and Materials (BR)
- Massachusetts Institute of Technology (US)
- Carnegie Mellon University (US)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-09-06
- DOI
- https://doi.org/10.1038/s41467-024-52018-w
- Citations
- 19
- Primary Topic
- Intermetallics and Advanced Alloy Properties
- Type
- article
- Field-Weighted Citation Impact
- 4.04
Funders
- National Science Foundation
- U.S. Department of Energy
- Fundação de Amparo à Pesquisa do Estado de São Paulo
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Ministério da Ciência, Tecnologia e Inovação
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Centro Nacional de Processamento de Alto Desempenho em São Paulo
- Centro Nacional de Pesquisa em Energia e Materiais
- Deutsches Elektronen-Synchrotron
- Laboratório Nacional de Luz Síncrotron
- Office of Advanced Cyberinfrastructure
- Army Research Office