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Title: Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation

Abstract

Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. Lastly, this result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.

Authors:
 [1];  [1];  [2];  [2];  [3];  [3];  [3]; ORCiD logo [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Kyushu Univ., Fukuoka (Japan)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1324177
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 125; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; concentrated solid solution alloys; radiation; defects; transmission electron microscopy

Citation Formats

He, Mo -Rigen, Wang, Shuai, Jin, Ke, Bei, Hongbin, Yasuda, Kazuhiro, Matsumura, Syo, Higashida, Kenji, and Robertson, Ian M. Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation. United States: N. p., 2016. Web. doi:10.1016/j.scriptamat.2016.07.023.
He, Mo -Rigen, Wang, Shuai, Jin, Ke, Bei, Hongbin, Yasuda, Kazuhiro, Matsumura, Syo, Higashida, Kenji, & Robertson, Ian M. Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation. United States. doi:10.1016/j.scriptamat.2016.07.023.
He, Mo -Rigen, Wang, Shuai, Jin, Ke, Bei, Hongbin, Yasuda, Kazuhiro, Matsumura, Syo, Higashida, Kenji, and Robertson, Ian M. 2016. "Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation". United States. doi:10.1016/j.scriptamat.2016.07.023. https://www.osti.gov/servlets/purl/1324177.
@article{osti_1324177,
title = {Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation},
author = {He, Mo -Rigen and Wang, Shuai and Jin, Ke and Bei, Hongbin and Yasuda, Kazuhiro and Matsumura, Syo and Higashida, Kenji and Robertson, Ian M.},
abstractNote = {Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. Lastly, this result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.},
doi = {10.1016/j.scriptamat.2016.07.023},
journal = {Scripta Materialia},
number = C,
volume = 125,
place = {United States},
year = 2016,
month = 7
}

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Cited by: 2works
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