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Title: In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy

Enhanced irradiation tolerance in crystalline multilayers has received significant attention lately. However, little is known on the irradiation response of crystal/amorphous nanolayers. We report on in situ Kr ion irradiation studies of a bulk Fe 96Zr 4 nanocomposite alloy. Irradiation resulted in amorphization of Fe 2Zr and formed crystal/amorphous nanolayers. α-Fe layers exhibited drastically lower defect density and size than those in large α-Fe grains. In situ video revealed that mobile dislocation loops in α-Fe layers were confined by the crystal/amorphous interfaces and kept migrating to annihilate other defects. This study provides new insights on the design of irradiation-tolerant crystal/amorphous nanocomposites.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [2]
  1. China Univ. of Petroleum-Beijing, Beijing (China); Texas A&M Univ., College Station, TX (United States)
  2. Texas A&M Univ., College Station, TX (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357; AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Volume: 3; Journal Issue: 1; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; defect cluster; heavy ion irradiation; absorption; annihilation
OSTI Identifier:
1215515
Alternate Identifier(s):
OSTI ID: 1221665

Yu, K. Y., Fan, Z., Chen, Y., Song, M., Liu, Y., Wang, H., Kirk, M. A., Li, M., and Zhang, X.. In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy. United States: N. p., Web. doi:10.1080/21663831.2014.951494.
Yu, K. Y., Fan, Z., Chen, Y., Song, M., Liu, Y., Wang, H., Kirk, M. A., Li, M., & Zhang, X.. In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy. United States. doi:10.1080/21663831.2014.951494.
Yu, K. Y., Fan, Z., Chen, Y., Song, M., Liu, Y., Wang, H., Kirk, M. A., Li, M., and Zhang, X.. 2014. "In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy". United States. doi:10.1080/21663831.2014.951494. https://www.osti.gov/servlets/purl/1215515.
@article{osti_1215515,
title = {In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe 2 Zr nanocomposite alloy},
author = {Yu, K. Y. and Fan, Z. and Chen, Y. and Song, M. and Liu, Y. and Wang, H. and Kirk, M. A. and Li, M. and Zhang, X.},
abstractNote = {Enhanced irradiation tolerance in crystalline multilayers has received significant attention lately. However, little is known on the irradiation response of crystal/amorphous nanolayers. We report on in situ Kr ion irradiation studies of a bulk Fe96Zr4 nanocomposite alloy. Irradiation resulted in amorphization of Fe2Zr and formed crystal/amorphous nanolayers. α-Fe layers exhibited drastically lower defect density and size than those in large α-Fe grains. In situ video revealed that mobile dislocation loops in α-Fe layers were confined by the crystal/amorphous interfaces and kept migrating to annihilate other defects. This study provides new insights on the design of irradiation-tolerant crystal/amorphous nanocomposites.},
doi = {10.1080/21663831.2014.951494},
journal = {Materials Research Letters},
number = 1,
volume = 3,
place = {United States},
year = {2014},
month = {8}
}