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      The characterization of plastic behavior and mechanical properties in the gradient nanostructured copper

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          Abstract

          Due to their individual plastic deformation behavior and mechanistic performances, gradient nano-grained (GNG) metals have been identified as promising materials for application in advanced engineering applications. However, their plasticity mechanism has not been thoroughly investigated. Hence, in this work, molecular dynamics simulation was employed to characterize the atomistic behavior of copper GNG structures under tensile loading with different grain sizes (2–9 nm) at varied temperatures (100, 300, and 600 K). The results indicated that there existed a critical grain size value (6 nm) for the Hall–Petch and inverse Hall–Petch relationship. Besides, it was found that the high-temperature loading (600 K) negatively affected the plasticity-induced strengthening, while low-temperature loading induced outstanding plasticity-induced strengthening owing to the excessive strain hardening events. The details of plastic deformation from the perspective of grain boundary, deformation twining, stacking faults, and dislocations were analyzed and a thorough discussion was presented to elucidate the grain size and temperature effects on the plasticity mechanism.

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          Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool

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              Embedded-atom-method functions for the fcc metals Cu, Ag, Au, Ni, Pd, Pt, and their alloys

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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
                Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
                SAGE Publications
                1464-4207
                2041-3076
                September 2023
                March 05 2023
                September 2023
                : 237
                : 9
                : 1910-1920
                Affiliations
                [1 ]Department of Mechanical Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Jawa Tengah, Indonesia
                [2 ]Department of General Studies, Universidad Continental, Lima, Peru
                [3 ]Department of Mathematics, Dwaraka Doss Goverdhan Doss Vaishnav College, Arumbakkam, University of Madras, Chennai, India
                [4 ]Medical Laboratories Techniques Department, Al-Mustaqbal University College, Babylon, Hilla, Iraq
                [5 ]Technical Engineering Department, College of Technical Engineering, The Islamic University, Najaf, Iraq
                [6 ]Division of Advanced Nano Material Technologies, Scientific Research Center, Al-Ayen University, Thi-Qar, Iraq
                [7 ]Department of Chemistry, College of Science, Diyala University, Baqubah, Diyala, Iraq
                Article
                10.1177/14644207231161752
                2fd0a022-b2d0-4d84-b643-6e2250d6fcf6
                © 2023

                http://journals.sagepub.com/page/policies/text-and-data-mining-license

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