Title

Severe Plastic Deformation Assisted Carbide Precipitation in Fe-21Cr-5Al Alloy

Abstract

FeCrAl alloys are promising materials for fuel cladding in light water reactors due to their high-temperature oxidation resistance in a steam environment. In this study, microstructural analysis revealed that Cr-C precipitation is enhanced in a severely plastically deformed (SPD) Fe-21Cr-5Al alloy [Kanthal-D (KD)], as compared to that in a coarse grained (CG) specimen. SPD was performed using equal-channel angular pressing (ECAP) and high-pressure torsion (HPT). The enhanced precipitation is attributed to an increase in the volume fraction of grain boundaries (GB) and to enhanced diffusion owing to increased point defects during ECAP and HPT.

Department(s)

Materials Science and Engineering

Comments

This research is financially supported by U.S. Department of Energy , Office of Nuclear Energy through the NEET-NSUF (Nuclear Energy Enabling Technology-- Nuclear Science User Facility) program (award number DE-NE0008524).

Keywords and Phrases

Electron microscopy; Grain boundaries; Microstructure; Nanocrystalline materials; Nuclear materials; Segregation

International Standard Serial Number (ISSN)

0167-577X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Elsevier B.V., All rights reserved.

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