Reeju Pokharel

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, a non-destructive in-situ measurement of 3D microstructure evolution of 99.995 % pure polycrystalline copper during tensile loading using synchrotron radiation is presented.

TL;DR: In this paper, a spectral method is used to analyze the stress state based on a fully anisotropic elastic calculation, and the results indicate that although a high resolved shear stress is associated with the locations of the observed cracks, the length of the trace of the twin boundary is more strongly correlated with crack formation.

TL;DR: In this article, the evolution of the crystallographic orientation field in a polycrystalline sample of copper is mapped in three dimensions as tensile strain is applied, and the ability to track intragranular orientation variations is demonstrated on an ∼2'µm length scale with ∼0.1° orientation precision.

TL;DR: In this paper, a single crystal model was proposed to represent the essential features of the three materials accounting for dislocation interactions and representation of grain size via a simple Hall-Petch type term.