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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium The John Cahn Memorial Symposium
Presentation Title Beyond the Gorsky Effect – Exploring Larché-Cahn Open System Elasticity in Experiment
Author(s) Shan Shi, Jörg Weissmüller
On-Site Speaker (Planned) Shan Shi
Abstract Scope With their Linear Theory of Thermochemical Equilibrium of Solids under Stress [1] and with later extensions, John Cahn and Francis Larché established a fundamental link between solid mechanics and the thermodynamics of multicomponent systems. Well in the 20th century each of the two fields was mature, and interactions between alloy chemistry and stress were acknowledged and understood in individual instances, yet it was only with the Larché-Cahn theory that a general joint description was presented. In view of the role of that theory as a key achievement of 20th century thermodynamics, it is amazing that little, if any, direct experimental demonstrations of its power have been reported. Arguably the most closely related phenomenon of experimental interest is the Gorsky effect, a transport of solute stimulated by cyclic applied stress. Internal friction experiments which exploit the Gorsky effect for measuring diffusion parameters have been of interest to the field of hydrogen diffusion in metals. Yet, the opportunities of probing the quasi-static elastic constants in open systems and of possibly even tuning the elastic response of materials based on the predictions by Larché and Cahn appear to have so far been largely overlooked. The talk will discuss experimental approaches that explore the ramifications of mobile solute on the elastic response of solids, confirming the impact of the Larché-Cahn theory for materials behavior.
Proceedings Inclusion? Undecided


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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