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Title: In situ studies on radiation tolerance of nanotwinned Cu

We investigate the radiation response of nanotwinned Cu by using in situ Kr ion irradiation technique inside a transmission electron microscope. In comparison with coarse grained Cu, nanotwinned Cu exhibits smaller defect size and lower defect density. In situ studies also show that twin boundaries effectively remove a large number of defect clusters. The life time of defect clusters in nanotwinned Cu is very different from that in its coarse grained counterpart. This study provides further evidence on twin-boundary enabled radiation tolerance in nanotwinned metals.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [4] ;  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Texas A & M Univ., College Station, TX (United States)
  2. Texas A & M Univ., College Station, TX (United States)
  3. China Univ. of Petroleum, Beijing (China)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Report Number(s):
LA-UR-17-21934
Journal ID: ISSN 1359-6454; TRN: US1800635
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 111; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
nanotwins; radiation damage; in situ; defect kinetics; Material Science
OSTI Identifier:
1414105
Alternate Identifier(s):
OSTI ID: 1357663