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Title: Local nanoscale strain mapping of a metallic glass during in situ testing

Abstract

The local elastic strains during tensile deformation in a CuZrAlAg metallic glass are obtained by fitting an elliptic shape function to the characteristic amorphous ring in electron diffraction patterns. Scanning nanobeam electron diffraction enables strain mapping with a resolution of a few nanometers. Here, a fast direct electron detector is used to acquire the diffraction patterns at a sufficient speed to map the local transient strain during continuous tensile loading in situ in the transmission electron microscope. The elastic strain in tensile direction was found to increase during loading. After catastrophic fracture, a residual elastic strain that relaxes over time was observed.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [3]
  1. Austrian Academy of Sciences, Leoben (Austria)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  4. Austrian Academy of Sciences, Leoben (Austria); Montanuniversitat Leoben, Leoben (Austria)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1462978
Alternate Identifier(s):
OSTI ID: 1434829
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 17; Related Information: © 2018 Author(s).; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Gammer, Christoph, Ophus, Colin, Pekin, Thomas C., Eckert, Jurgen, and Minor, Andrew M. Local nanoscale strain mapping of a metallic glass during in situ testing. United States: N. p., 2018. Web. doi:10.1063/1.5025686.
Gammer, Christoph, Ophus, Colin, Pekin, Thomas C., Eckert, Jurgen, & Minor, Andrew M. Local nanoscale strain mapping of a metallic glass during in situ testing. United States. doi:10.1063/1.5025686.
Gammer, Christoph, Ophus, Colin, Pekin, Thomas C., Eckert, Jurgen, and Minor, Andrew M. Mon . "Local nanoscale strain mapping of a metallic glass during in situ testing". United States. doi:10.1063/1.5025686. https://www.osti.gov/servlets/purl/1462978.
@article{osti_1462978,
title = {Local nanoscale strain mapping of a metallic glass during in situ testing},
author = {Gammer, Christoph and Ophus, Colin and Pekin, Thomas C. and Eckert, Jurgen and Minor, Andrew M.},
abstractNote = {The local elastic strains during tensile deformation in a CuZrAlAg metallic glass are obtained by fitting an elliptic shape function to the characteristic amorphous ring in electron diffraction patterns. Scanning nanobeam electron diffraction enables strain mapping with a resolution of a few nanometers. Here, a fast direct electron detector is used to acquire the diffraction patterns at a sufficient speed to map the local transient strain during continuous tensile loading in situ in the transmission electron microscope. The elastic strain in tensile direction was found to increase during loading. After catastrophic fracture, a residual elastic strain that relaxes over time was observed.},
doi = {10.1063/1.5025686},
journal = {Applied Physics Letters},
number = 17,
volume = 112,
place = {United States},
year = {2018},
month = {4}
}

Journal Article:
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