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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium The John Cahn Memorial Symposium
Presentation Title Dislocations, Trijunctions and Grain Rotation
Author(s) Kevin McReynolds, Akinori Yamanaka, Peter Voorhees
On-Site Speaker (Planned) Akinori Yamanaka
Abstract Scope One of John Cahn’s many talents was his ability to identify important problems that were overlooked by past investigators in a field. John’s work with Jean Taylor on the rotation of grains during grain growth is a perfect example of this and, like usual, has stimulated much interest in the community. Building on his work, we have used a phase field crystal model to describe the dynamics grain growth in both two and three dimensions. We find that the atomic-scale structure of the boundary gives rise to qualitatively new grain growth kinetics as well as to both grain rotation and translation. The grain translation is a result of the climb, glide, and interactions of the dislocations that comprise the grain boundary, as well as dislocation interactions at trijunctions. The important role of the three-dimensional interfacial dislocation structure in the grain translation and rotation processes will be discussed.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A DSC Model for Grain Boundary Migration and Properties
Beyond the Gorsky Effect – Exploring Larché-Cahn Open System Elasticity in Experiment
Dislocations, Trijunctions and Grain Rotation
Energetic Trends for Twin Boundaries in HCP Metals
Experimental Measures of Stress-coupled Boundary Migration and the Attendant Mechanical Behavior of Nanocrystalline Films
How Some Quasicrystals Might Grow
John Cahn's Boss, Really?
John Cahn and Aesthetics of Materials
Molecular Dynamics Simulations of Faceted, Incoherent Twin Boundaries
Phase Transition and Anomalous Diffusion in Metastable β Ti-Mo
Quasi-history of Quasi-crystallinity
Thin Film Grain Growth for Twin Related Orientations of Grains

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