| DH36钢中碳氮化物析出的热力学分析 |
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| 引用本文： | 杨文晟,吴建中,郭汉杰,于梦曦,段生朝,石骁.DH36钢中碳氮化物析出的热力学分析[J].有色金属科学与工程,2017,8(1):29-34. |
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| 作者姓名： | 杨文晟 吴建中 郭汉杰 于梦曦 段生朝 石骁 |
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| 作者单位： | 北京科技大学冶金与生态工程学院, 高端金属材料特种熔炼与制备北京市重点实验室, 北京100083 |
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| 基金项目： | 国家自然科学基金资助项目51274031 |
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| 摘 要： | 针对Fe-Nb-Ti-C-N系统, 利用双亚点阵模型对DH36钢中碳氮析出物析出条件进行热力学计算.计算结果表明, 钛的碳氮化物析出温度为1 380 ℃, 铌的碳氮化物析出温度为1 100 ℃.其中在1 100~1 400 ℃的高温区, TiN为影响奥氏体均热阶段晶粒长大的主要因素.在1 100 ℃以下的低温区NbC、TiC是抑制DH36钢中奥氏体再结晶及再结晶后奥氏体长大的重要因素.
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| 关 键 词： | DH36船板钢 碳氮化物 析出 双亚点阵模型 |
| 收稿时间： | 2016-09-29 |
Thermodynamic analysis of precipitation of carbon nitride in DH36 steel |
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| Affiliation: | School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China |
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| Abstract: | The two sub-lattice model was applied to determine the precipitation conditions of carbon and nitrogen precipitates in DH36 steel on the basis of the Fe-Nb-Ti-C-N system. The results show that the precipitation temperature of titanium is 1380 ℃, and the precipitation temperature of Nb is 1100 ℃. TiN was the main factor affecting the grain growth of austenite in the 1 100~1 400 ℃. Below 1 100 ℃ NbC and TiC are the important factors to inhibit austenite recrystallization and recrystallization in DH36 steel. |
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