Journal
SCRIPTA MATERIALIA
Volume 159, Issue -, Pages 123-127Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.09.030
Keywords
Austenitic stainless steel; Nanotwinned; Irradiation; Deformation twinning; Void swelling
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Funding
- U.S. Department of Energy through an Integrated University Program Graduate Fellowship
- National Science Foundation through the University of Wisconsin Materials Research Science and Engineering Center [DMR-1720415]
- U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office through a Nuclear Science User Facilities experimental project [DE-AC07-051D14517]
- Ion Beam Laboratory at the University of Wisconsin, Madison
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A key strategy to increase the radiation resistance of materials has been to introduce a high density of interfaces that can act as sinks for radiation-induced defects. Twin boundaries are a type of interface that can be introduced through deformation but are usually considered to be ineffective sinks. Using heavy ion irradiation and transmission electron microscopy, this study investigates the influence of a high area per unit volume of twin boundaries on the radiation-induced swelling response of an austenitic stainless steel. The study shows that swelling can be suppressed in regions containing a high density of closely-spaced deformation twin boundaries. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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