Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1580079 | Materials Science and Engineering: A | 2009 | 4 Pages |
Abstract
The purpose of this study is to investigate the internal friction (IF) behaviour of thermally aged Fe-Cu alloys that are model specimens simulating for the irradiation embrittlement of nuclear reactor pressure vessel (RPV) steels. Plate-shaped specimens of Fe-1Â wt.% Cu alloy were quenched from 1123Â K and thermally aged at 773Â K for 103Â min. The IF of the specimens was measured without magnetic field using the free resonant bending vibration method. Magnetic hysteresis loops and conductivity were also measured. The IF value, hysteresis loss, and conductivity increased under thermal aging, which suggests that the IF characteristics are closely related to the change of electromagnetic eddy-current loss due to the depletion of Cu solute atoms. This study demonstrates the possibility of the application of IF measurement as one of the tools for nondestructive characterization of degradation processes of irradiated RPV steels.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Y. Kamada, Y. Nishino, S. Hosoi, S. Tamaoka, N. Ide, H. Kikuchi, S. Kobayashi,