Abstracts

We present a new methodology, coupling between acoustic emission measurements and in situ scanning electron microscopy experiments to quantify the evolution of damage and crack initiation in single crystal nickel microcrystals. The mechanical properties are continuously monitored during the loading using dynamic measurements and…

High brilliance synchrotron sources of high energy x-rays have recently provided researchers with a new class of 4D (in-situ and in-operando) techniques for assessing the evolution of strain and crystal orientation within individual grains of a polycrystal. Researchers can now measure the single-crystal elastic…

The presentation will discuss how virtual diffraction experiments and data analytics can be used simultaneously to derive numerically efficient models that can relate diffraction peak broadening to dislocation content in a deformed microstructure. Specifically, a new algorithm will be presented to generate virtual diffraction…

At the continuum level, slip transfer across grain boundaries is usually resolved through geometric arguments, whilst the dislocations remain Volterra singularities, and their interactions are assumed to be based on the linear elastic considerations that govern conventional dislocation dynamics. In this talk, we use…

Defects play a crucial role in determining the macroscopic properties of materials. The profound significance of defects arises from the coupling between the discrete effects of the lattice, chemical effects of the core and the long-range effects of the elastic field. Defects and their…

Upon the long history of dislocation theory and dislocation imaging using transmission electron microscopy, improvement in the understanding of dislocations requires continuous experimental substantiation and calibration. In the meantime, emerging alloy design strategies are increasing the complexity of the materials, thereby challenging classical descriptions…