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| Kinetics of Formation of Large-Dimension Rare Earth Inclusion in Steels | |
| 引用本文： | 赵晓栋,姜江,李国宝,李风照. Kinetics of Formation of Large-Dimension Rare Earth Inclusion in Steels[J]. 中国稀土学报(英文版), 2004, 22(3): 403-405 |
| 作者姓名： | 赵晓栋 姜江 李国宝 李风照 |
| 作者单位： | [1]SchoolofMaterialScienceandEngineering,ShandongUniversity,Jinan250061,China [2]JinanIron＆SteelGroupCorporation,Jinan250101,China |
| 摘 要： | The elemental distribution within the large-dimension rare earth inclusion in steels was studied through analysis on plane distribution of elements by EPMA (Electron Probe Microanalyzer). The kinetics and mechanism of formation of RE inclusion were discussed, taking 5CrNiMo steel with the addition of RE and other microalloying elements as example. RE inclusions nucleate on oxides and sulphides with high melting point and grow up separately, then integrated by relatively high surface activity, which is a particular characteristic of RE elements, in liquid phase and during the course of solidification. Finally, the fine and dispersed RE inclusions merge and grow into a large-dimension one. |
| 关 键 词： | 稀土 钢 动力学 EPMA 成核作用 电子探针 5CrNiMo |
Kinetics of Formation of Large-Dimension Rare Earth Inclusion in Steels |
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| Zhao Xiaodong ,Jiang Jiang. Kinetics of Formation of Large-Dimension Rare Earth Inclusion in Steels[J]. Journal of Rare Earths, 2004, 22(3): 403-405 | |
| Authors: | Zhao Xiaodong Jiang Jiang |
| Affiliation: | Zhao Xiaodong ~1,Jiang Jiang ~ |
| Abstract: | The elemental distribution within the large-dimension rare earth inclusion in steels was studied through analysis on plane distribution of elements by EPMA (Electron Probe Microanalyzer). The kinetics and mechanism of formation of RE inclusion were discussed, taking 5CrNiMo steel with the addition of RE and other microalloying elements as example. RE inclusions nucleate on oxides and sulphides with high melting point and grow up separately, then integrated by relatively high surface activity, which is a particular characteristic of RE elements, in liquid phase and during the course of solidification. Finally, the fine and dispersed RE inclusions merge and grow into a large-dimension one. |
| Keywords: | metal materials RE inclusion large-dimension nucleate separately-merge and grow kinetics rare earths |
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