Symmetry of crystals … the fun and the application to understanding the shape memory effect and superelasticity in alloys

Fecha: 5 de abril de 2018
Hora: 12:00
Lugar: Salón de Grados de la Facultad de Ciencias
Ponente: Wolfgang Schmal del Departamento de Cristalografía de la Ludwigs-Maximilian Universität München.

Abstract
The lecture first gives a fundamental introduction into the symmetry of crystals and then proceeds to the application of the consequences of symmetry and broken symmetry for physical properties of crystalline materials. Shape memory in alloys is a consequence of a structural phase transition between a state of high symmetry to a state of lower symmetry. The phase change couples with external mechanical stress as it is associated with a pure shear-deformation of the unit cell of the crystal structure.

A live experiment will be shown.