Effect of Neutron Flux on Magnetic Hysteresis in Neutron-Irradiated Pressure Vessel Steels

被引：1

作者：

Kobayashi, Satoru ^{[1
]}

Yamamoto, Takuya ^{[2
]}

Klingensmith, Doug ^{[2
]}

Odette, G. Robert ^{[2
]}

Kikuchi, Hiroaki ^{[1
]}

Kamada, Yasuhiro ^{[1
]}

机构：

[1] Iwate Univ, Dept Mat Sci & Engn, Morioka, Iwate 0208551, Japan

[2] Univ Calif Santa Barbara, Dept Mech & Environm Engn, Santa Barbara, CA 93106 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2014年 / 50卷 / 04期

基金：

日本学术振兴会;

关键词：

Magnetic hysteresis; neutron radiation effects; steel; EMBRITTLEMENT;

D O I：

10.1109/TMAG.2013.2286401

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effect of neutron flux on magnetic minor hysteresis loops has been investigated on nuclear reactor pressure vessel steels, which were irradiated to a fluence of 3.3 x 10(19) n/cm(2). A minor-loop coefficient, which is an indicator of internal stress, exhibits a local maximum at a fluence of similar to 1 x 10(19) n/cm(2), whose position shifts to a low-fluence regime with decreasing neutron flux. Introducing an effective fluence, used to correct the flux effect of irradiation hardening, the data obtained by different flux were found to almost fall on single curve for some alloys. This implies that the flux effect on magnetic property is dominated by efficiency of radiation-enhanced diffusion of solute atoms, such as Cu, as in the case of irradiation hardening.

引用

页数：4