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Title: Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources

Abstract

Novel non-destructive characterization techniques performed at light sources provide previously inaccessible 3-D mesoscopic information on the deformation of polycrystalline materials. One major difficulty for interpretation of these experiments through micromechanical modelling is the likelihood that processing and/or mounting the sample introduce residual stresses in the specimen. These stresses need to be incorporated into crystal plasticity formulations, for these models to operate directly from microstructural images and be predictive. To achieve this, the initial micromechanical state of each voxel needs to be specified. Here in this letter we present a method for incorporating grain-averaged residual stresses for instantiation of crystal plasticity simulations.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1460635
Alternate Identifier(s):
OSTI ID: 1398052
Report Number(s):
LA-UR-16-29549
Journal ID: ISSN 1359-6462
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 132; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; microstructure; synchrotron radiation; micromechanical modeling; residual stresses; polycrystal plasticity

Citation Formats

Pokharel, Reeju, and Lebensohn, Ricardo A. Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources. United States: N. p., 2017. Web. doi:10.1016/j.scriptamat.2017.01.025.
Pokharel, Reeju, & Lebensohn, Ricardo A. Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources. United States. doi:10.1016/j.scriptamat.2017.01.025.
Pokharel, Reeju, and Lebensohn, Ricardo A. Wed . "Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources". United States. doi:10.1016/j.scriptamat.2017.01.025. https://www.osti.gov/servlets/purl/1460635.
@article{osti_1460635,
title = {Instantiation of crystal plasticity simulations for micromechanical modelling with direct input from microstructural data collected at light sources},
author = {Pokharel, Reeju and Lebensohn, Ricardo A.},
abstractNote = {Novel non-destructive characterization techniques performed at light sources provide previously inaccessible 3-D mesoscopic information on the deformation of polycrystalline materials. One major difficulty for interpretation of these experiments through micromechanical modelling is the likelihood that processing and/or mounting the sample introduce residual stresses in the specimen. These stresses need to be incorporated into crystal plasticity formulations, for these models to operate directly from microstructural images and be predictive. To achieve this, the initial micromechanical state of each voxel needs to be specified. Here in this letter we present a method for incorporating grain-averaged residual stresses for instantiation of crystal plasticity simulations.},
doi = {10.1016/j.scriptamat.2017.01.025},
journal = {Scripta Materialia},
number = C,
volume = 132,
place = {United States},
year = {Wed Feb 08 00:00:00 EST 2017},
month = {Wed Feb 08 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 4 works
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