Details

Autor(en) / Beteiligte

• Kobayashi, Satoru
• Gillemot, Ferenc
• Horváth, Ákos
• Horváth, Marta
• László, Almásy

Titel

Effect of long-term thermal aging on magnetic hysteresis for low-alloy pressure vessel steel

Ist Teil von

• Journal of physics. Conference series, 2017-10, Vol.903 (1), p.12049

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2017

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Long-term thermal aging experiments have been performed at 290 and 550°C up to ∼ 10000 h for low-alloy pressure vessel steels with low and high Ni contents, in order to elucidate effects of thermal embrittlement on a structure-sensitive property of minor B-H loops. While a minor-loop property obtained from a power-law scaling of minor-loop parameters exhibits a small but steady increase after aging at 290°C, that exhibits a decreasing trend after aging at 550°C. The observations suggest that the evolution of nanometer precipitates plays a crucial role for a magnetic property change at 290°C, while relaxation of lattice strain in a matrix associated with precipitation may dominate at 550°C.