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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5025686· OSTI ID:1462978
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)

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1462978
Alternate ID(s):
OSTI ID: 1434829
Journal Information:
Applied Physics Letters, Vol. 112, Issue 17; Related Information: © 2018 Author(s).; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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