Dynamic plastic deformation delocalization in FCC solid solution metals
Metallic materials undergo irreversible deformation under mechanical loading, leading to intense local plastic localization that reduces their mechanical performance. We identify a mechanism of plastic deformation that dynamically promotes the homogenization of plasticity in face-centered cubic solid solution-strengthened metallic alloys. We observe that this mechanism occurs within a narrow range of stacking fault energies and involves competing deformation between nanoscale twinning and slip. This phenomenon is attributed to a new mechanism referred to as dynamic plastic deformation delocalization, which opens a new design space for enhancing the mechanical performance of metallic materials. We demonstrate that the activation of this mechanism has a significant impact on fatigue properties, greatly enhancing fatigue strength when it occurs.
Authors
- Guillaume Laplanche (ORCID: https://orcid.org/0000-0001-9559-0928)
- Milan Heczko
- Maik Rajkowski (ORCID: https://orcid.org/0009-0000-9691-1017)
- Aditya Srinivasan Tirunilai
- Daegun You (ORCID: https://orcid.org/0000-0002-9435-0452)
- Hüseyin Sehitoglu
- Shuchi Sanandiya
- Dhruv Anjaria
- J. C. Stinville
Institutions
- University of Illinois Urbana-Champaign (US)
- Czech Academy of Sciences, Institute of Physics of Materials (CZ)
- Ruhr University Bochum (DE)
Publication Details
- Journal
- Nature Communications
- Published
- 2026-02-02
- DOI
- https://doi.org/10.1038/s41467-026-69046-3
- Citations
- 1
- Primary Topic
- Microstructure and mechanical properties
- Type
- article
- Field-Weighted Citation Impact
- 16.08
Funders
- National Science Foundation
- Deutsche Forschungsgemeinschaft
- Ministerstvo Školství, Mládeže a Tělovýchovy
- Grantová Agentura České Republiky
- Central European Institute of Technology
- University of Illinois at Urbana-Champaign
- Division of Materials Research
- Division of Civil, Mechanical and Manufacturing Innovation