Dynamic Plastic Deformation Delocalization in FCC Solid Solution Metals
Abstract
Metallic materials undergo irreversible deformation under mechanical loading, leading to intense local plastic localization that reduces their mechanical performance. We identify a new mechanism of plastic deformation localization 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.
Cite
@article{arxiv.2507.05293,
title = {Dynamic Plastic Deformation Delocalization in FCC Solid Solution Metals},
author = {Dhruv Anjaria and Milan Heczko and Daegun YoU and Mathieu Calvat and Shuchi Sanandiya and Maik Rajkowski and Aditya Srinivasan Tirunilai and Huseyin Sehitoglu and Guillaume Laplanche and J. C. Stinville},
journal= {arXiv preprint arXiv:2507.05293},
year = {2025}
}