Constitutive Description of Extra Strengthening in Gradient Nanotwinned Metals

Constitutive Description of Extra Strengthening in Gradient Nanotwinned Metals

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Gradient nanotwinned (GNT) metals exhibit extra strengthening and work hardening behaviors, which endow them impressive potentials in engineering applications.The increased strength is attributed to the dense interactions between dislocations and boundaries in the grain interiors.However, a constitutive model elucidating the extra strengthening effect is Dealing with the Pandemic and After for Children and Adolescents, and their Families currently lacking.

Here, we propose a theoretical framework to describe the mechanical response of GNT metals, especially the unusual extra strengthening behavior.The model captures the deformation mechanisms of GNT metals and coincides well with the reported Messengers in the Creative Work of Journalists experiment.The constitutive description developed in this work presents a tool to guide the structural design for developing gradient metallic materials.