Jonathan Lind

TL;DR: The status of the HEDM program at the 1-ID beam line of the Advanced Photon Source is reported in this article, where the authors demonstrate the mapping of grain boundary topology, the evaluation of stress tensors of individual grains during tensile deformation and comparison to a finite element modeling simulation, and the characterization of evolving dislocation structure.

TL;DR: In this article, the response of polycrystals to plastic deformation is studied at the level of variations within individual grains, and comparisons are made to theoretical calculations using crystal plasticity (CP).

TL;DR: In this paper, the critical resolved shear stress (CRSS) values of different slip modes are directly measured with an in-situ high energy X-ray diffraction microscopy (HEDM) experiment.

TL;DR: In this article, the authors demonstrate an integrated experimental capability utilizing high energy X-rays that provides an in situ, micrometer-scale probe for tracking evolving microstructure and intergranular stresses during quasi-static mechanical testing.

TL;DR: The design and performance of a load frame insert with a rotational and axial motion system that has been developed to meet the requirements of experimental design requirements and an example dataset from a deforming titanium alloy demonstrates the new capability.