抄録
Since there are many generation factors for surface cracks on steel products manufactured by the processes of continuous casting through billet rolling, it is important for their prevention to identify the process where the surface cracks are generated. In this study, the formation mechanism of the oxide particles in the subscale layer around surface cracks of steel products was investigated towards establishing an estimation method of crack generation temperature. It was found that, the average radius leveled off corresponding with its exposed temperature after enough holding time. The average radiuses were 0.2 μm and 0.3μm for 1473K and 1573K, respectively. Those oxide particles were consisted of MnO SiO2 and MnO Cr2O 3 phases. Their formation and growth mechanism was as follows: Firstly, MnO-SiO2 precipitates at the internal oxidation reaction front. Then, MnO-Cr2O3 forms on the MnO- SiO2 particles. The existence of these two phases played an important role to determine the terminal value of the average radius.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 531-540 |
| ページ数 | 10 |
| ジャーナル | Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan |
| 巻 | 95 |
| 発行部数 | 7 |
| DOI | |
| 出版物ステータス | 出版済み - 9 9 2009 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry
これを引用
Formation mechanism of oxide particles in subscale layer around surface cracks of steel. / Ohba, Yasuhide; Yamashita, Yuki; Ohno, Ko-Ichiro; Maeda, Takayuki; Nishioka, Koki; Shimizu, Masakata.
：: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 巻 95, 番号 7, 09.09.2009, p. 531-540.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Formation mechanism of oxide particles in subscale layer around surface cracks of steel
AU - Ohba, Yasuhide
AU - Yamashita, Yuki
AU - Ohno, Ko-Ichiro
AU - Maeda, Takayuki
AU - Nishioka, Koki
AU - Shimizu, Masakata
PY - 2009/9/9
Y1 - 2009/9/9
N2 - Since there are many generation factors for surface cracks on steel products manufactured by the processes of continuous casting through billet rolling, it is important for their prevention to identify the process where the surface cracks are generated. In this study, the formation mechanism of the oxide particles in the subscale layer around surface cracks of steel products was investigated towards establishing an estimation method of crack generation temperature. It was found that, the average radius leveled off corresponding with its exposed temperature after enough holding time. The average radiuses were 0.2 μm and 0.3μm for 1473K and 1573K, respectively. Those oxide particles were consisted of MnO SiO2 and MnO Cr2O 3 phases. Their formation and growth mechanism was as follows: Firstly, MnO-SiO2 precipitates at the internal oxidation reaction front. Then, MnO-Cr2O3 forms on the MnO- SiO2 particles. The existence of these two phases played an important role to determine the terminal value of the average radius.
AB - Since there are many generation factors for surface cracks on steel products manufactured by the processes of continuous casting through billet rolling, it is important for their prevention to identify the process where the surface cracks are generated. In this study, the formation mechanism of the oxide particles in the subscale layer around surface cracks of steel products was investigated towards establishing an estimation method of crack generation temperature. It was found that, the average radius leveled off corresponding with its exposed temperature after enough holding time. The average radiuses were 0.2 μm and 0.3μm for 1473K and 1573K, respectively. Those oxide particles were consisted of MnO SiO2 and MnO Cr2O 3 phases. Their formation and growth mechanism was as follows: Firstly, MnO-SiO2 precipitates at the internal oxidation reaction front. Then, MnO-Cr2O3 forms on the MnO- SiO2 particles. The existence of these two phases played an important role to determine the terminal value of the average radius.
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UR - http://www.scopus.com/inward/citedby.url?scp=69749110139&partnerID=8YFLogxK
U2 - 10.2355/tetsutohagane.95.531
DO - 10.2355/tetsutohagane.95.531
M3 - Article
VL - 95
SP - 531
EP - 540
JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
SN - 0021-1575
IS - 7
ER -