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Title: Local and transient nanoscale strain mapping during in situ deformation

Abstract

The mobility of defects such as dislocations controls the mechanical properties of metals. This mobility is determined both by the characteristics of the defect and the material, as well as the local stress and strain applied to the defect. Therefore, the knowledge of the stress and strain during deformation at the scale of defects is important for understanding fundamental deformation mechanisms. In this paper, we demonstrate a method of measuring local stresses and strains during continuous in situ deformation with a resolution of a few nanometers using nanodiffraction strain mapping. Finally, our results demonstrate how large multidimensional data sets captured with high speed electron detectors can be analyzed in multiple ways after an in situ TEM experiment, opening the door for true multimodal analysis from a single electron scattering experiment.

Authors:
 [1];  [2];  [3];  [4];  [1];  [2]
+ Show Author Affiliations
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. Gatan, Inc., Pleasanton, CA (United States)
  4. Hysitron, Inc., Minneapolis, MN (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); Austrian Science Fund (Austria)
OSTI Identifier:
1379572
Alternate Identifier(s):
OSTI ID: 1307788
Grant/Contract Number:  
AC02-05CH11231; 1235610; J3397
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 109; Journal Issue: 8; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Strain measurement; Stress strain relations; Transmission electron microscopy; Shear deformation; Transient deformation

Citation Formats

Gammer, C., Kacher, J., Czarnik, C., Warren, O. L., Ciston, J., and Minor, A. M. Local and transient nanoscale strain mapping during in situ deformation. United States: N. p., 2016. Web. doi:10.1063/1.4961683.
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Gammer, C., Kacher, J., Czarnik, C., Warren, O. L., Ciston, J., & Minor, A. M. Local and transient nanoscale strain mapping during in situ deformation. United States. https://doi.org/10.1063/1.4961683
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Gammer, C., Kacher, J., Czarnik, C., Warren, O. L., Ciston, J., and Minor, A. M. Fri . "Local and transient nanoscale strain mapping during in situ deformation". United States. https://doi.org/10.1063/1.4961683. https://www.osti.gov/servlets/purl/1379572.
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@article{osti_1379572,
title = {Local and transient nanoscale strain mapping during in situ deformation},
author = {Gammer, C. and Kacher, J. and Czarnik, C. and Warren, O. L. and Ciston, J. and Minor, A. M.},
abstractNote = {The mobility of defects such as dislocations controls the mechanical properties of metals. This mobility is determined both by the characteristics of the defect and the material, as well as the local stress and strain applied to the defect. Therefore, the knowledge of the stress and strain during deformation at the scale of defects is important for understanding fundamental deformation mechanisms. In this paper, we demonstrate a method of measuring local stresses and strains during continuous in situ deformation with a resolution of a few nanometers using nanodiffraction strain mapping. Finally, our results demonstrate how large multidimensional data sets captured with high speed electron detectors can be analyzed in multiple ways after an in situ TEM experiment, opening the door for true multimodal analysis from a single electron scattering experiment.},
doi = {10.1063/1.4961683},
journal = {Applied Physics Letters},
number = 8,
volume = 109,
place = {United States},
year = {Fri Aug 26 00:00:00 EDT 2016},
month = {Fri Aug 26 00:00:00 EDT 2016}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1063/1.4961683
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