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| 不同形变速率条件下低碳钢过冷奥氏体形变过程铁素体超细化 | |
| 引用本文： | 周荣锋,杨王玥,孙祖庆,何建平.不同形变速率条件下低碳钢过冷奥氏体形变过程铁素体超细化[J].北京科技大学学报,2004,26(5):512-518. |
| 作者姓名： | 周荣锋 杨王玥 孙祖庆 何建平 |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083;昆明理工大学机电工程学院,昆明,650093 2. 北京科技大学材料科学与工程学院,北京,100083 3. 北京科技大学新金属材料国家重点实验室,北京,100083 |
| 基金项目： | 国家重点基础研究发展计划(973计划) , 国家高技术研究发展计划(863计划) |
| 摘 要： | 研究了低碳钢过冷奥氏体在760℃,形变速率为1 s-1和10 s-1变形时组织演变规律.结果表明,形变速率为1 s-1时真应力-应变曲线双峰特征为形变强化相变和铁素体动态再结晶的表征,相变形核集中在铁素体/奥氏体相界前沿奥氏体高畸变区,晶粒长大在时间和空间上受到限制,细化能力较高;形变速率提高到10 s-1时,相变动力学提前,曲线只表现为形变强化相变的单峰特征,相变形核除了在上述铁素体/奥氏体相界前沿奥氏体高畸变区,还分布到奥氏体晶内各处,晶粒间约束有所减小,尺寸稍大.通过形变强化相变和铁素体动态再结晶可以获得平均晶粒尺寸为(1.98士1.07)μm和(2.33士1.01)μm(10 s-1)左右的微细铁素体晶粒. |
| 关 键 词： | 低碳钢 形变强化相变 铁素体动态再结晶 晶粒细化 形变速率 形变速率 条件 低碳钢 过冷奥氏体 形变过程 铁素体晶粒 超细化 Austenite Rates Strain Different Deformation during Low Carbon Steel Ferrite 平均晶粒尺寸 约束 晶内 分布 单峰 |
| 修稿时间： | 2003年11月14日 |
Formation of Ultra-fine Ferrite in Low Carbon Steel during Deformation at Different Strain Rates of Undercooled Austenite |
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| ZHOU Rongfeng,YANG Wangyue,SUN Zuqing,HE Jianping Materials Science and Engineering School,University of Science and Technology Beijing,Beijing ,China The State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing ,China School of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming ,China.Formation of Ultra-fine Ferrite in Low Carbon Steel during Deformation at Different Strain Rates of Undercooled Austenite[J].Journal of University of Science and Technology Beijing,2004,26(5):512-518. | |
| Authors: | ZHOU Rongfeng YANG Wangyue SUN Zuqing HE Jianping Materials Science and Engineering School University of Science and Technology Beijing Beijing China The State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing China School of Mechanical and Electrical Engineering Kunming University of Science and Technology Kunming China |
| Institution: | ZHOU Rongfeng,YANG Wangyue,SUN Zuqing,HE Jianping Materials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083,China The State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China School of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650093,China |
| Abstract: | |
| Keywords: | low carbon steel deformation enhanced transformation ferrite dynamic recrystallization grain refinement strain rate |
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