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contributor authorChua, Janel
contributor authorAgrawal, Vaibhav
contributor authorWalkington, Noel
contributor authorGazonas, George
contributor authorDayal, Kaushik
date accessioned2025-04-21T10:24:22Z
date available2025-04-21T10:24:22Z
date copyright9/10/2024 12:00:00 AM
date issued2024
identifier issn0021-8936
identifier otherjam_91_12_121002.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306121
description abstractIn this work, we apply a phase-field modeling framework to elucidate the interplay between nucleation and kinetics in the dynamic evolution of twinning interfaces. The key feature of this phase-field approach is the ability to transparently and explicitly specify nucleation and kinetic behavior in the model, in contrast to other regularized interface models. We use this to study two distinct problems where it is essential to explicitly specify the kinetic and nucleation behavior governing twin evolution. First, we study twinning interfaces in 2D. When these interfaces are driven to move, we find that significant levels of twin nucleation occur ahead of the moving interface. Essentially, the finite interface velocity and the relaxation time of the stresses ahead of the interface allow for nucleation to occur before the interface is able to propagate to that point. Second, we study the growth of needle twins in antiplane elasticity. We show that both nucleation and anisotropic kinetics are essential to obtain predictions of needle twins. While standard regularized interface approaches do not permit the transparent specification of anisotropic kinetics, this is readily possible with the phase-field approach that we have used here.
publisherThe American Society of Mechanical Engineers (ASME)
titleInterplay Between Nucleation and Kinetics in Dynamic Twinning
typeJournal Paper
journal volume91
journal issue12
journal titleJournal of Applied Mechanics
identifier doi10.1115/1.4066285
journal fristpage121002-1
journal lastpage121002-10
page10
treeJournal of Applied Mechanics:;2024:;volume( 091 ):;issue: 012
contenttypeFulltext


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