TY - JOUR
T1 - A comparative characterization of defect structure in NiCo and NiFe equimolar solid solution alloys under in situ electron irradiation
AU - He, Mo Rigen
AU - Wang, Shuai
AU - Jin, Ke
AU - Bei, Hongbin
AU - Yasuda, Kazuhiro
AU - Matsumura, Syo
AU - Higashida, Kenji
AU - Robertson, Ian M.
N1 - Funding Information:
This work was supported as part of Energy Dissipation to Defect Evolution (EDDE), an Energy Frontier Research Center funded by the U.S. Department of Energy , Office of Science under Contract No. DE-AC05-00OR22725 . In situ electron irradiation was accomplished at the Ultramicroscopy Research Center, Kyushu University, as a project of the HVEM Collaborative Research Program sponsored by MEXT of the Japanese Government. The authors are grateful to Dr. Shi Shi for contribution to sample preparation and Dr. Tomokazu Yamamoto for assistance in microscope operation. Instrument support was also provided by the Materials Research Science and Engineering Center (DMR-1121288), University of Wisconsin-Madison.
Funding Information:
★ This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
Publisher Copyright:
© 2019 Elsevier Ltd.
PY - 2019/6
Y1 - 2019/6
N2 - Dislocation loops in NiCo and NiFe, both being single-phase, equimolar solid solution alloys, are generated by in situ high-voltage electron irradiation and characterized inside a transmission electron microscope. In addition to the different defect growth rates, the two alloys present dislocation loops with distinct shape evolution and element segregation, which reflect the element-sensitive, intrinsic properties (e.g., defect energetics, lattice distortion, and local ordering) of the alloys. These results provide evidence that the structure and dynamics of radiation-induced defects in concentrated alloys depend on not only the number but also the species of alloying elements.
AB - Dislocation loops in NiCo and NiFe, both being single-phase, equimolar solid solution alloys, are generated by in situ high-voltage electron irradiation and characterized inside a transmission electron microscope. In addition to the different defect growth rates, the two alloys present dislocation loops with distinct shape evolution and element segregation, which reflect the element-sensitive, intrinsic properties (e.g., defect energetics, lattice distortion, and local ordering) of the alloys. These results provide evidence that the structure and dynamics of radiation-induced defects in concentrated alloys depend on not only the number but also the species of alloying elements.
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U2 - 10.1016/j.scriptamat.2019.03.008
DO - 10.1016/j.scriptamat.2019.03.008
M3 - Article
AN - SCOPUS:85062810822
SN - 1359-6462
VL - 166
SP - 96
EP - 101
JO - Scripta Materialia
JF - Scripta Materialia
ER -