Changes in magnetic properties of neutron irradiated RPV steel

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.706784· OSTI ID:649530

Park, D G; Hong, J H ^[1]; Ok, C I; Kim, J W ^[2]; Kim, H C ^[3]

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1. Korea Atomic Energy Research Inst., Taejon (Korea, Republic of)
2. Pusan National Univ. (Korea, Republic of)
3. Korea Advanced Inst. Science and Technology, Taejon (Korea, Republic of)

Conventional magnetic parameters and Barkhausen noise have been measured in pressure vessel steel samples both as-received and irradiated with doses of up to 10{sup 18} n/cm{sup 2}. The conventional magnetic parameters, i.e., coercive force, remanence and maximum induction did not change significantly with irradiation, whereas the Barkhausen noise amplitude and energy during a magnetization cycle decreased markedly with irradiation dose. A three stage variation of Barkhausen noise with neutron dose was observed in the present work, namely an initial decrease, a near plateau and rapid decrease. The three stage variation with neutron dose is in qualitative agreement with computer simulations of the radiation damage process performed by Beeler. The hardness also varied in three stages in a reverse manner with transition at the same doses.

• Sponsoring Organization: USDOE
• OSTI ID: 649530
• Report Number(s): CONF-980102-; ISSN 0018-9464; TRN: 98:010426
• Journal Information: IEEE Transactions on Magnetics, Vol. 34, Issue 4Pt1; Conference: 7. joint MMM-intermag conference, San Francisco, CA (United States), 6-9 Jan 1998; Other Information: PBD: Jul 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
22 NUCLEAR REACTOR TECHNOLOGY
NUCLEAR POWER PLANTS
PRESSURE VESSELS
STEELS
PHYSICAL RADIATION EFFECTS
MAGNETIC PROPERTIES
EXPERIMENTAL DATA
HARDNESS
DOMAIN STRUCTURE