skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High-energy x-ray diffraction microscopy study of deformation microstructures in neutron-irradiated polycrystalline Fe-9%Cr

Abstract

In this paper, we used far-field high-energy x-ray diffraction microscopy (FF-HEDM) to measure in 3D the spatial distributions of the sizes, orientations, and residual strains of grains and subgrains formed by room-temperature tensile deformation in a neutron-irradiated (450 °C, 0.01dpa) Fe-9Cr specimen and its unirradiated counterpart. We found that neutron irradiation under this condition alone had no effect on the grain size distribution. After deformation, grains fragmented into subgrains in both unirradiated and irradiated specimens: the irradiated specimen contained a few large subgrains which co-existed with many smaller subgrains, while the unirradiated specimen contained small subgrains with a relatively uniform size distribution. Prior to deformation, the irradiated specimen had higher residual strain spread compared to its unirradiated counterpart, while after deformation to the maximum uniform elongation, the strain distributions among subgrains were similar between the unirradiated and irradiated specimens. The FF-HEDM measurements provide new insight into the effects of neutron irradiation on the mechanical response of Fe-Cr ferritic alloys.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE), Nuclear Energy Enabling Technologies (NEET); USDOE
OSTI Identifier:
1467466
Alternate Identifier(s):
OSTI ID: 1495278
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 508; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ferritic alloy; high-energy x-ray diffraction microscopy; mechanical deformation; neutron irradiation

Citation Formats

Zhang, Xuan, Li, Meimei, Park, Jun-Sang, Kenesei, Peter, Sharma, Hemant, and Almer, Jonathan. High-energy x-ray diffraction microscopy study of deformation microstructures in neutron-irradiated polycrystalline Fe-9%Cr. United States: N. p., 2018. Web. https://doi.org/10.1016/j.jnucmat.2018.06.004.
Zhang, Xuan, Li, Meimei, Park, Jun-Sang, Kenesei, Peter, Sharma, Hemant, & Almer, Jonathan. High-energy x-ray diffraction microscopy study of deformation microstructures in neutron-irradiated polycrystalline Fe-9%Cr. United States. https://doi.org/10.1016/j.jnucmat.2018.06.004
Zhang, Xuan, Li, Meimei, Park, Jun-Sang, Kenesei, Peter, Sharma, Hemant, and Almer, Jonathan. Mon . "High-energy x-ray diffraction microscopy study of deformation microstructures in neutron-irradiated polycrystalline Fe-9%Cr". United States. https://doi.org/10.1016/j.jnucmat.2018.06.004. https://www.osti.gov/servlets/purl/1467466.
@article{osti_1467466,
title = {High-energy x-ray diffraction microscopy study of deformation microstructures in neutron-irradiated polycrystalline Fe-9%Cr},
author = {Zhang, Xuan and Li, Meimei and Park, Jun-Sang and Kenesei, Peter and Sharma, Hemant and Almer, Jonathan},
abstractNote = {In this paper, we used far-field high-energy x-ray diffraction microscopy (FF-HEDM) to measure in 3D the spatial distributions of the sizes, orientations, and residual strains of grains and subgrains formed by room-temperature tensile deformation in a neutron-irradiated (450 °C, 0.01dpa) Fe-9Cr specimen and its unirradiated counterpart. We found that neutron irradiation under this condition alone had no effect on the grain size distribution. After deformation, grains fragmented into subgrains in both unirradiated and irradiated specimens: the irradiated specimen contained a few large subgrains which co-existed with many smaller subgrains, while the unirradiated specimen contained small subgrains with a relatively uniform size distribution. Prior to deformation, the irradiated specimen had higher residual strain spread compared to its unirradiated counterpart, while after deformation to the maximum uniform elongation, the strain distributions among subgrains were similar between the unirradiated and irradiated specimens. The FF-HEDM measurements provide new insight into the effects of neutron irradiation on the mechanical response of Fe-Cr ferritic alloys.},
doi = {10.1016/j.jnucmat.2018.06.004},
journal = {Journal of Nuclear Materials},
number = C,
volume = 508,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Sketch of FF-HEDM experimental setup for the irradiated sample. Top right corner shows a tensile-deformed sample. The deformed area measured by FF-HEDM was sampled on the gauge section away from the necking center, and the undeformed area was sampled underneath the pin hole in the grip section. Bottommore » right corner shows representative diffraction pattern segments from the undeformed area (spotty) and the deformed area (smeared).« less

Save / Share: