| 含Nb-Ti-Al的X100管线钢碳氮化物析出研究 |
| |
| 作者姓名： | 齐 亮 申邦坡 胡义锋 张迎晖 |
| |
| 作者单位： | 江西理工大学材料科学与工程学院 |
| |
| 基金项目： | 江西省教育厅基金资助项目(gjj1145) |
| |
| 摘 要： | 基于双亚点阵模型,建立X100管线钢（Nbx,Ti1-x）（CyN1-y）-AlN复合析出热力学模型。热力学模型计算结果表明,1 450～1 100K时,Nb析出量显著增大;1 800～1 400K时,Ti析出速度加快,AlN的析出温度为1 450K左右。TEM观察及EDS分析结果显示,1 173K时,有大量细小（Nb,Ti）（C,N）的析出物产生,Nb与Ti的原子比大于4;1 373K时,Nb与Ti的原子比接近1;1 523K时,以较大长条形、方形析出物为主,Nb与Ti的原子比小于0.43。热力学模型计算结果与JMatpro软件计算结果及EDS统计结果有较好的一致性。
|
| 关 键 词： | 析出 回溶 管线钢 碳氮化物 热力学模型 |
| 收稿时间： | 2011/12/17 0:00:00 |
Precipitation and dissolution behaviors of carbonitride in Nb-Ti-Al X100pipeline steels |
| |
| Authors: | Qi Liang Shen Bangpo Hu Yifeng and Zhang Yinghui |
| |
| Institution: | (School of Material Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China) |
| |
| Abstract: | Based on an ideal two-sublattice model,a thermodynamic model for（Nbx,Ti1-x）（CyN1-y）-AlN complex precipitates was constructed.The calculation shows that： Nb precipitates significantly at the temperature range of 1 450 ~1 100 K;Ti precipitates fast at the temperature range of 1 800 to1 400 K;and the precipitation temperature of AlN is 1 450 K.TEM observation and EDS analysis demonstrate that,at the temperature of 1 173 K,a large number of small-size（Nb,Ti）（C,N） precipitates and the atomic ratio of Nb to Ti is greater than 4.When the temperature increases to 1 373 K,the atomic ratio approaches 1.And at the temperature of 1 523 K,the precipitates are mainly comparatively large strip and square,while the atomic ratio of Nb∶Ti is smaller than 0.43.The calculation results agree well with those obtained by JMatpro software and those by EDS. |
| |
| Keywords: | precipitation dissolution pipeline steel carbonitride thermodynamic model |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
| 点击此处可从《》下载免费的PDF全文 |
|
