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| 热连轧生产厚规格X80管线钢的静态再结晶行为及工艺优化 | |
| 引用本文： | 刘文斌,康永林,牛涛,李彬.热连轧生产厚规格X80管线钢的静态再结晶行为及工艺优化[J].北京科技大学学报,2010,32(4). |
| 作者姓名： | 刘文斌 康永林 牛涛 李彬 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083;首钢迁钢公司热轧分厂,迁安,064404 2. 北京科技大学材料科学与工程学院,北京,100083;北京科技大学新金属国家重点实验室,北京,100083 3. 北京科技大学材料科学与工程学院,北京,100083 4. 首钢迁钢公司热轧分厂,迁安,064404 |
| 基金项目： | 国家高技术研究发展计划资助项目(No.2009AA03Z518) |
| 摘 要： | 通过双道次压缩实验对首钢迁安公司2160热连轧生产的厚规格X80管线钢形变奥氏体静态再结晶行为进行了研究,依据实验规律对生产工艺进行了改进与优化.通过力学拉伸、冲击及落锤实验,对改进工艺后生产的X80钢的综合性能进行了检测,利用光学显微镜、扫描电镜和透射电镜对X80钢卷显微组织进行了观察分析.结果表明:变形温度是影响奥氏体静态再结晶行为的主要因素;微合金碳氮化物的析出抑制了再结晶的进行,使软化率曲线出现了平台;利用实验结果回归计算出了X80管线钢的静态再结晶激活能为380kJ·mol-1,并根据文献研究讨论了结果的合理性.通过工艺改进与优化,所生产X80钢卷的显微组织细小均匀,呈现典型的针状铁素体特征;析出相中主要包含复合的(Ti,Nb)(C,N)以及单个的NbC;X80钢卷棒状试样的拉伸性能较相关标准均有较大富余量,尤其在冲击、落锤性能方面表现出了良好的低温韧性. |
| 关 键 词： | 管线钢 连续轧制 静态再结晶 组织 力学性能 |
Static recrystallization behavior and technological improvement of X80 pipeline steel with heavy thickness produced by hot continuous rolling |
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| LIU Wen-bin,KANG Yong-lin,NIU Tao,LI Bin.Static recrystallization behavior and technological improvement of X80 pipeline steel with heavy thickness produced by hot continuous rolling[J].Journal of University of Science and Technology Beijing,2010,32(4). | |
| Authors: | LIU Wen-bin KANG Yong-lin NIU Tao LI Bin |
| Abstract: | The static recrystallization behavior of deformed austenite in X80 pipeline steel with heavy thickness manufactured by the 2160 Hot Continuous Rolling Production Line in Shougang Qiangang was investigated by double hit compression experiment.According to the results,the production technology was improved and optimized.The mechanical properties of X80 pipeline steel obtained by the optimized production technology were tested using tensile,impacting and drop weight tearing tests(DWTT).The microstructure was o... |
| Keywords: | pipeline steel continuous rolling static recrystallization microstructure mechanical properties |
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