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

Journal Article · · Materials Research Letters
 [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)

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.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC04-94AL85000
OSTI ID:
1215515
Alternate ID(s):
OSTI ID: 1221665
Journal Information:
Materials Research Letters, Vol. 3, Issue 1; ISSN 2166-3831
Publisher:
Taylor and FrancisCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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