@article{4a3acfb82b8e432c85cbea6031d45841,
title = "Plastic deformation delocalization at cryogenic temperatures in a nickel-based superalloy",
abstract = "A nickel-based superalloy is examined during monotonic deformation from ambient to cryogenic temperatures, reaching as low as liquid helium temperature. A detailed multimodal analysis of the microstructure and plasticity is conducted to discern changes in deformation mechanisms and plastic deformation localization under cryogenic conditions. This study employs high-resolution digital image correlation and transmission electron microscopy to identify the deformation mechanisms and understand their influence on plastic deformation localization as the temperature varies. At cryogenic temperatures, unusual plastic deformation localization processes are observed, attributed to the competing activation of a range of deformation processes. Furthermore, a mechanism of slip delocalization, i.e., local plastic deformation homogenization through closely spaced slip, is noted at these extreme temperatures. Ultimately, the impact of the microstructure is identified across the temperature range, from room to cryogenic temperatures.",
keywords = "Cryogenic temperatures, High-resolution digital image correlation, Nanotwinning, Nickel-based superalloy, Plastic deformation delocalization",
author = "Dhruv Anjaria and Milan Heczko and Black, \{Rephayah L.\} and Chris Bean and Reynolds, \{Mike A.\} and Kun Zhang and Damien Texier and Valery Valle and Mills, \{Michael J.\} and Pagan, \{Darren C.\} and Stinville, \{J. C.\}",
note = "DA and JCS acknowledge the support of the National Science Foundation (NSF), USA: DMR Grant \#2234892. CB, RLB, and JCS are grateful for financial support from the Energy \& Biosciences Institute (EBI), USA, through the EBI-Shell Program. DCP is supported by NSF Award DMR, USA Grant \#2234891. This work was carried out in the Materials Research Laboratory Central Research Facilities, University of Illinois, and at the Advanced Materials Testing and Evaluation Laboratory, University of Illinois. Scanning transmission electron microscopy was performed at the Center for Electron Microscopy and Analysis (CEMAS) at The Ohio State University. Special thanks to Eric Thorsland for his technical assistance. Carpenter Technology are acknowledged for providing the 718 material. DT and JCS are grateful to the Centre National de la Recherche Scientifique (CNRS), France for the mobility grant with the International Research Project denoted \textbackslash{}u201CCIN\&MAT\textbackslash{}u201D. The color-blind version of this article has been made possible thanks to funding from the National Science Foundation (NSF), USA (award \#2338346). DA and JCS acknowledge the support of the National Science Foundation (NSF) : DMR Grant \# 2234892 . CB, RLB, and JCS are grateful for financial support from the Energy \& Biosciences Institute (EBI), USA , through the EBI-Shell Program. DCP is supported by NSF Award DMR Grant \# 2234891 . This work was carried out in the Materials Research Laboratory Central Research Facilities, University of Illinois, and at the Advanced Materials Testing and Evaluation Laboratory, University of Illinois. Scanning transmission electron microscopy was performed at the Center for Electron Microscopy and Analysis (CEMAS) at The Ohio State University. Special thanks to Eric Thorsland for his technical assistance. Carpenter Technology are acknowledged for providing the 718 material. DT and JCS are grateful to the Centre National de la Recherche Scientifique (CNRS) for the mobility grant with the International Research Project denoted \textbackslash{}u201CCIN\&MAT\textbackslash{}u201D. The color-blind version of this article has been made possible thanks to funding from the NSF (award \#2338346 ).",
year = "2024",
month = sep,
day = "1",
doi = "10.1016/j.actamat.2024.120106",
language = "English (US)",
volume = "276",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Acta Materialia Inc",
}