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 virginia mill works tobacco road acacia and boundaries in the grain interiors.However, a constitutive model elucidating the extra strengthening effect is 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 wella color charm 050 cooling violet coincides well with the reported experiment.The constitutive description developed in this work presents a tool to guide the structural design for developing gradient metallic materials.