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Length scale effects of micro- and meso-scale tensile tests of unirradiated and irradiated Zircaloy-4 cladding

Journal Article · · Journal of Nuclear Materials
 [1];  [2];  [2];  [3];  [4];  [2];  [2];  [1]
  1. University of California, Berkeley, CA (United States)
  2. Idaho National Laboratory (INL), Idaho Falls, ID (United States)
  3. University of California, Berkeley, CA (United States); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
  4. NCRN - Department of Materials Engineering, Be'er-Sheva (Israel)
Zircaloy-4 is an essential material for cladding structures within fission-based reactors. To explore the changes in properties measured on differing length scales, FIB-machined micro-scale tensile tests were performed on both irradiated and control groups of Zircaloy-4. This was correlated with tensile testing on femtosecond laser-machined meso-scale specimens. Pronounced size effects were found when varying specimen geometry. Increases in tensile geometry size were associated with a reduction in measured yield stress for both irradiated and unirradiated samples. Here, meso-scale testing found strength and strain values similar to that of bulk-scale testing.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
2503497
Report Number(s):
INL/JOU--24-79634-Rev000
Journal Information:
Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Vol. 604; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (18)

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Novel Methods for the Site Specific Preparation of Micromechanical Structures journal March 2015

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