Nondestructive Evualuation of the Irradiated Mn-Mo-Ni Low Alloy Steel by Magnetic Methods

Seung Sik Park; K. O. Chang; D. G. ParkC. O. Kim

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Nondestructive Evualuation of the Irradiated Mn-Mo-Ni Low Alloy Steel by Magnetic Methods

机译：Nondestructive Evualuation of the Irradiated Mn-Mo-Ni Low Alloy Steel by Magnetic Methods

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The changes of the magnetic properties due to neutron irradiation was investigated for the broken Charpy specimens of A508 Class 2 pressure vessel steel weldments which were exposed to irradiation levels of 1.228 x 10~(19) n/cm~2and 3.938 x 10~(19) n/cm~2. Barkhausen noise(BN) and the complex permeability were compared with the mechanical property parameters which were measured by the Vickers micro hardness, tensile and Charpy impact test. The results of different neutron doses showed noticeable fractional changes in the magnetic parameters, correlated with the mechanical properties of these specimens as well. Increasing the neutron dose decreased the BN level, initial permeability, and upper-shelf energy, but increased the hardness and yield strength, as well as. These results show that both the BN and the complex permeability measurements are good indicators of material degradation in reactor pressure vessel(RPV) steel.

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《Key engineering materials》 |2004年第1期|657-661|共5页
作者
Seung Sik Park; K. O. Chang; D. G. ParkC. O. Kim;
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作者单位

TCNC, Korea Atomic Energy Research Institute, Yuseong P.O. Box 105, Daejeon 305-600, Korea;

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原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
neutron irradiation effect; RPV; barkhausen noise; complex permeability;

Nondestructive Evualuation of the Irradiated Mn-Mo-Ni Low Alloy Steel by Magnetic Methods

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