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Interaction between edge dislocation and inhomogeneity of an arbitrary shape and properties under coupled thermomechanical strains

Sun Yang, Li Ang, Shi Lan, Liu Mabao

Journal of Theoretical and Applied Mechanics

2021

Vol. 59 nr 1

121--133

In this work, a general approximate solution for the configurational force between edge dislocation and inhomogeneity of an arbitrary shape and properties with coupled thermo- mechanical loads was developed on the basis of the Eshelby equivalent inclusion theory. The effect of temperature-dependent elastic properties, thermal expansion coefficient and yield strength on the configurational forces was analyzed. Furthermore, the configurational force considered to be the driving force for dislocation migration was innovatively used to investigate the interaction mechanism between graphene and internal defects of a metal.