Internal friction and magnetic properties of thermally aged Fe-1 wt.% Cu alloys

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:521-22

Article; Proceedings Paper

Kamada, Y.^1,2  Nishino, Y.³  Hosoi, S.^1,2  Tamaoka, S.³  Ide, N.³  Kikuchi, H.^1,2  Kobayashi, S.^1,2 

[1] Iwate Univ, NDE, Morioka, Iwate 0208551, Japan

[2] Iwate Univ, Fac Engn, Ctr Sci Res, Morioka, Iwate 0208551, Japan

[3] Nagoya Inst Technol, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, Japan

关键词: Internal friction;    Magnetism;    Hysteresis loss;    Precipitation;    Thermal aging;    Irradiation embrittlement;   

DOI  :  10.1016/j.msea.2008.09.143

来源: Elsevier

【 摘 要 】

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-1 wt.% Cu alloy were quenched from 1123 K and thermally aged at 773 K for 10(3) 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. (C) 2009 Elsevier B.V. All rights reserved.

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