On Freud’s “The Uncanny”, edited by Catalina Bronstein and Christian Seulin,Routledge, Abingdon and New York, 2020, 137 pp.

The American Journal of Psychoanalysis -     

Kinetics of interstitial segregation in Cottrell atmospheres and grain boundaries

Trapping of interstitial (e.g. carbon) atoms is driven by the reduction in energy in the system. Diffusion of interstitials, together with their trapping in dislocation cores and/or grain boundaries, is studied by the thermodynamic extremal principle. In addition to the total Gibbs energy, a well-established formulation of the total dissipation is applied. Dimension-free evolution equations are derived, whose solution is well approximated by an easy to handle kinetic equation. Cottrell’s power law can be verified in the initial stage.     

Calibration of phase field parameters demonstrated on kinetics of a shrinking single grain

The phase field method is frequently employed to simulate evolution of rather complex microstructures. In order to accurately describe the real kinetics of a specific material system, the phase field parameters must be calibrated to standard thermodynamic quantities such as interface mobilities or interface energies. This letter presents a convenient method, based on thermodynamic modelling of shrinking of a single grain embedded in single crystal (matrix), how to calibrate the phase field parameters. It also shows, how the required thermodynamic quantities can be met by proper rescaling of a phase field simulation carried out for given phase field parameters.     

Mothers: An Essay on Love and Cruelty,by Jacqueline Rose,Farrar, Straus and Giroux,New York, 2018, 237 pp.

The American Journal of Psychoanalysis -