Abstract
We investigated the microstructure, magnetic hysteresis properties, and micro Vickers hardness of nuclear reactor pressure vessel(RPV) steel cladded with austenitic stainless steel. Characterization of the crystalline structure by electron backscatter diffraction revealed the existence of a delta ferrite phase in the austenitic cladding, and the formation of coarse and fine grain microstructures in the heat affected zone(HAZ)of the RPV steel. The block specimen was cut into small pieces and magnetic hysteresis loops were measured with a vibrating sample magnetometer. Although the saturation magnetization of the RPV steel was constant, the coercivity in the HAZ region decreased gradually as a function of distance from the weld fusion boundary. A linear correlation was confirmed between the coercivity and hardness. This study demonstrates the feasibility of a magnetic evaluation of hardness and microstructures in RPV steel.
| Original language | English |
|---|---|
| Pages (from-to) | 475-479 |
| Number of pages | 5 |
| Journal | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
| Volume | 81 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Jan 1 2017 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry
Cite this
Correlation between magnetic hysteresis Properties and Vickers hardness in cladded reactor pressure vessel steel. / Aihara, Yuta; Kamada, Yasuhiro; Murakami, Takeshi; Kobayashi, Satoru; Watanabe, Hideo.
In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 81, No. 10, 01.01.2017, p. 475-479.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Correlation between magnetic hysteresis Properties and Vickers hardness in cladded reactor pressure vessel steel
AU - Aihara, Yuta
AU - Kamada, Yasuhiro
AU - Murakami, Takeshi
AU - Kobayashi, Satoru
AU - Watanabe, Hideo
PY - 2017/1/1
Y1 - 2017/1/1
N2 - We investigated the microstructure, magnetic hysteresis properties, and micro Vickers hardness of nuclear reactor pressure vessel(RPV) steel cladded with austenitic stainless steel. Characterization of the crystalline structure by electron backscatter diffraction revealed the existence of a delta ferrite phase in the austenitic cladding, and the formation of coarse and fine grain microstructures in the heat affected zone(HAZ)of the RPV steel. The block specimen was cut into small pieces and magnetic hysteresis loops were measured with a vibrating sample magnetometer. Although the saturation magnetization of the RPV steel was constant, the coercivity in the HAZ region decreased gradually as a function of distance from the weld fusion boundary. A linear correlation was confirmed between the coercivity and hardness. This study demonstrates the feasibility of a magnetic evaluation of hardness and microstructures in RPV steel.
AB - We investigated the microstructure, magnetic hysteresis properties, and micro Vickers hardness of nuclear reactor pressure vessel(RPV) steel cladded with austenitic stainless steel. Characterization of the crystalline structure by electron backscatter diffraction revealed the existence of a delta ferrite phase in the austenitic cladding, and the formation of coarse and fine grain microstructures in the heat affected zone(HAZ)of the RPV steel. The block specimen was cut into small pieces and magnetic hysteresis loops were measured with a vibrating sample magnetometer. Although the saturation magnetization of the RPV steel was constant, the coercivity in the HAZ region decreased gradually as a function of distance from the weld fusion boundary. A linear correlation was confirmed between the coercivity and hardness. This study demonstrates the feasibility of a magnetic evaluation of hardness and microstructures in RPV steel.
UR - http://www.scopus.com/inward/record.url?scp=85029840872&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85029840872&partnerID=8YFLogxK
U2 - 10.2320/jinstmet.JAW201702
DO - 10.2320/jinstmet.JAW201702
M3 - Article
AN - SCOPUS:85029840872
VL - 81
SP - 475
EP - 479
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 10
ER -