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鉄-炭素系包晶凝固中のγ相成長速度に及ぼす初期炭素濃度と冷却速度の影響
| Title: | 鉄-炭素系包晶凝固中のγ相成長速度に及ぼす初期炭素濃度と冷却速度の影響 |
| Other Titles: | Effects of Carbon Content and Cooling Rate on Growth Rate of γ-phase during Peritectic Solidification in Iron-carbon System |
| Authors: | 松浦, 清隆1 Browse this author →KAKEN DB | | 伊藤, 洋一2 Browse this author | | 工藤, 昌行3 Browse this author |
| Authors(alt): | Matsuura, Kiyotaka1 | | Itoh, Youichi2 | | Kudoh, Masayuki3 |
| Keywords: | continuous casting | | carbon steel | | diffusion | | phase transformation | | solidification |
| Issue Date: | 1-Jul-1998 |
| Publisher: | 日本鉄鋼協会 |
| Journal Title: | 鉄と鋼 |
| Volume: | 84 |
| Issue: | 7 |
| Start Page: | 496 |
| End Page: | 501 |
| Publisher DOI: | 10.2355/tetsutohagane1955.84.7_496 |
| Abstract: | Changes in fractions of δ-ferrite, austenite and liquid phases during peritectic solidification in iron-carbon system are calculated. The peritectic solidification, δ+L→γ, is divided into δ→γ transformation at δ/γ interface and L→γ solidification at γ/L interface. Both the transformation and solidification proceed by (1) carbon diffusion from liquid through austenite into δ-ferrite and (2) precipitation of austenite from δ-ferrite and crystallization of it from liquid due to cooling. Approximately 80% of the austenite formed during the peritectic solidification is the product of δ→γ transformation, which may lead to the generation of tensile stress in the solidification shell because of the difference in density between the two solids. The amount of the δ→γ transformation is largest, when the initial carbon content is 0.17 mass%. However, when the transformation in a well-developed dendrite network is focused on, the carbon content for the largest amount of the transformation decreases to 0.14-0.16 mass%, which corresponds to the carbon content at which surface cracking of continuously cast slabs is reported to be most frequent. |
| Rights: | 著作権は日本鉄鋼協会にある |
| Type: | article |
| URI: | http://hdl.handle.net/2115/75753 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松浦 清隆
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