Neutron-Induced Microstructural Alteration of GlidCop™ Alloys at ∼415°C and High Neutron Exposure

Abstract

GlidCop™ internally oxidized copper alloys remain the leading candidates for high heat flux applications in fusion reactors. This paper presents the microstructural changes incurred in three GlidCop™ alloys exposed to long term, high temperature neutron irradiation. Irradiation at high temperature produced a microstructure containing a much lower dislocation density than the unirradiated specimens. Although 10-50 nm size triangular oxide particles were observed in areas with a very low number density of particles, spherical oxide particles on the order of 5-7 nm in diameter, though to be CuAl2O4, were the predominant morphology. The changes in grain size distribution, dislocation density, and precipitate type and distribution saturate in the range of 34 to 50 dpa, as reflected in the saturation of mechanical properties.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Composition Effects; Dislocations (crystals); Dispersions; Elementary Particles; Fusion Reactors; Grain Size and Shape; Metallographic Microstructure; Morphology; Neutrons; Radiation Damage; Thermal Effects; Glid cop Alloys; High Neutron Exposure; Microstructural Changes; Neutron Induced Microstructural Alteration; Neutron Irradiation; Copper Alloys

International Standard Serial Number (ISSN)

0022-3115

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1994 Elsevier, All rights reserved.

Publication Date

01 Sep 1994

Link to Full Text

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