R
Reeju Pokharel
Researcher at Los Alamos National Laboratory
Publications - 46
Citations - 1132
Reeju Pokharel is an academic researcher from Los Alamos National Laboratory. The author has contributed to research in topics: Diffraction & Microstructure. The author has an hindex of 16, co-authored 38 publications receiving 814 citations. Previous affiliations of Reeju Pokharel include Carnegie Mellon University.
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Journal ArticleDOI
Polycrystal Plasticity: Comparison Between Grain- Scale Observations of Deformation and Simulations
Reeju Pokharel,Jonathan Lind,Anand K. Kanjarla,Ricardo A. Lebensohn,S. F. Li,Peter Kenesei,Robert M. Suter,Anthony D. Rollett +7 more
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).
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In-situ observation of bulk 3D grain evolution during plastic deformation in polycrystalline Cu
Reeju Pokharel,Reeju Pokharel,Jonathan Lind,Jonathan Lind,S. F. Li,Peter Kenesei,Ricardo A. Lebensohn,Robert M. Suter,Anthony D. Rollett +8 more
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.
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Fatigue crack initiation, slip localization and twin boundaries in a nickel-based superalloy
Clayton Stein,A. R. Cerrone,Tugce Ozturk,Sukbin Lee,Peter Kenesei,Harris Tucker,Reeju Pokharel,Reeju Pokharel,Jonathan Lind,Jonathan Lind,C. M. Hefferan,C. M. Hefferan,Robert M. Suter,Anthony R. Ingraffea,Anthony D. Rollett +14 more
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.
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Three-dimensional plastic response in polycrystalline copper via near-field high-energy X-ray diffraction microscopy
S. F. Li,S. F. Li,Jonathan Lind,C. M. Hefferan,Reeju Pokharel,Ulrich Lienert,Anthony D. Rollett,Robert M. Suter +7 more
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.
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Structural representation of additively manufactured 316L austenitic stainless steel
Curt A. Bronkhorst,Jason R. Mayeur,Veronica Livescu,Reeju Pokharel,Donald W. Brown,George T. Gray +5 more
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.