title: Size dependence of incipient dislocation plasticity in Ni3Al.
abstract: Molecular dynamics simulations are carried out to study the incipient dislocation plasticity in Ni3Al. Dislocation nucleation is found to occur preferentially at energetic atomic clusters with larger-than-average relative displacements. From the simulated distribution of the atomic relative displacements, a scaling model is proposed to predict the size dependence of the incipient plasticity condition in real-sized specimens.
authors.affiliation: Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: L
authors.initials: L
authors.lastname: Zuo
authors.forename: A H W
authors.initials: AH
authors.lastname: Ngan
authors.forename: G P
authors.initials: GP
authors.lastname: Zheng