|
|||||
|
|
| HRB500E抗震钢筋中钛化物析出热力学分析 | |
| 引用本文： | 曾泽芸,李长荣,黎志英,刘占林,李正嵩,翟勇强.HRB500E抗震钢筋中钛化物析出热力学分析[J].钢铁,2020,55(5):45-51. |
| 作者姓名： | 曾泽芸 李长荣 黎志英 刘占林 李正嵩 翟勇强 |
| 作者单位： | 1. 贵州大学材料与冶金学院, 贵州 贵阳 550025; 2. 贵州省冶金工程与过程节能重点实验室, 贵州 贵阳 550025; 3. 首钢水城钢铁轧钢事业部, 贵州 六盘水 553000 |
| 基金项目： | 国家自然科学基金资助项目(51864013) |
| 摘 要： | 钢液凝固过程中钛化物在液相、固相的存在形态对固相组织的性能有着重要的影响,其第二相析出起到细化晶粒的作用。为分析HRB500E抗震钢筋钢中TiN、TiC、Ti(C,N)析出物的析出规律,对TiN、TiC、Ti(C,N)析出物进行热力学计算。结果表明,TiN、TiC在钢液成分均质状态下难以析出,TiC0.19N0.81在温度为1843K时析出;在凝固过程中,由于Ti、N在凝固前沿富集,TiN在凝固过程中具备析出的热力学条件,析出温度为1745K;在固相奥氏体中,TiN和TiC粒子具备析出热力学条件,TiC析出温度比TiN的低,铁素体中有TiC的析出。 |
| 关 键 词： | 抗震钢筋 氮化钛 碳化钛 碳氮化钛 析出热力学 |
| 收稿时间： | 2019-07-22 |
Thermodynamic analysis of titanium precipitation in HRB500E seismic steel |
|
| ZENG Ze-yun,LI Chang-rong,LI Zhi-ying,LIU Zhan-lin,LI Zheng-song,ZHAI Yong-qiang.Thermodynamic analysis of titanium precipitation in HRB500E seismic steel[J].Iron & Steel,2020,55(5):45-51. | |
| Authors: | ZENG Ze-yun LI Chang-rong LI Zhi-ying LIU Zhan-lin LI Zheng-song ZHAI Yong-qiang |
| Affiliation: | 1. College of Materials and Metallurgy, Guizhou University, Guiyang 550025, Guizhou, China;2. Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guiyang 550025,Guizhou, China;3. Rolling Business Department, Shougang Shuicheng Steel, Liupanshui 553000, Guizhou, China |
| Abstract: | The study of the existence of titanium compounds in liquid phase and solid phase during the solidification of molten steel has an important influence on the properties of solid phase structure, and the second phase precipitation played the role of grain refinement. In order to analyze the precipitation law of TiN, TiC and Ti(C,N) precipitate in HRB500E aseismic steel bar, the thermodynamics of TiN, TiC and Ti(C, N) precipitates were calculated. The results show that TiN and TiC cannot precipitate in the homogeneous state of molten steel, TiC0.19N0.81 precipitates at the temperature of 1 843 K; TiN has thermodynamic conditions for precipitation during solidification because of the enrichment of Ti and N at the solidification front with a temperature of 1 745 K; TiN and TiC particles have thermodynamic properties for precipitation in solid austenite; while TiC precipitates at a lower temperature than TiN,TiC particles precipitation in ferrite. |
| Keywords: | seismic steel titanium nitride titanium carbide titanium carbonitride precipitation thermodynamics |
| 本文献已被 CNKI 维普 等数据库收录！ | |
| 点击此处可从《钢铁》浏览原始摘要信息 | |
| 点击此处可从《钢铁》下载全文 | |
