Journal
ACTA MATERIALIA
Volume 111, Issue -, Pages 148-156Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2016.03.039
Keywords
Nanotwins; Radiation damage; In situ; Defect kinetics
Funding
- NSF-DMR-Metallic Materials and Nanostructures Program [1304101]
- NSF-CMMI [1161978]
- DOE-OBES [DE-SC0010482]
- China University of Petroleum-Beijing [2462015YQ0602]
- Texas A&M University on studying of materials in extreme environments via in situ techniques
- DOE Office of Nuclear Energy
- U Chicago, Argonne, LLC [DE-AC02-06CH11357]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1161978] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1643915] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1304101] Funding Source: National Science Foundation
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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. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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