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| 碳、锰含量对低碳(锰)钢过冷奥氏体形变过程中铁素体形核率的影响 | |
| 引用本文： | 周荣锋,杨王玥,孙祖庆,何建平.碳、锰含量对低碳(锰)钢过冷奥氏体形变过程中铁素体形核率的影响[J].北京科技大学学报,2005,27(1):35-39. |
| 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： | 研究了碳、锰含量对低碳(锰)钢形变强化铁素体晶粒数目变化的影响.结果表明,形变使低碳(锰)钢过冷奥氏体内部形核位置增加,铁素体形核率显著提高,晶粒大大细化.碳、锰含量提高有利于钢中过冷奥氏体累积变形的增加,形变强化相变晶粒细化能力增强,而碳的促进作用尤为显著. |
| 关 键 词： | 低碳(锰)钢 形变强化相变 形核率 晶粒细化 锰含量 低碳 过冷奥氏体 形变过程 铁素体 形核率 影响 carbon deformation during austenite nucleation rate Ferrite contents different 作用 增强 能力 晶粒细化 形变强化相变 |
| 修稿时间： | 2004年2月26日 |
Ferrite nucleation rate in undercooled austenite during deformation in low carbon (Mn) steels with different C and Mn contents |
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| ZHOU Rongfeng,YANG Wangyue,SUN Zuqing,He jianping.Ferrite nucleation rate in undercooled austenite during deformation in low carbon (Mn) steels with different C and Mn contents[J].Journal of University of Science and Technology Beijing,2005,27(1):35-39. | |
| Authors: | ZHOU Rongfeng YANG Wangyue SUN Zuqing He jianping |
| Abstract: | The effect of C and Mn contents on ferrite nucleation rate during Deformation-Enhanced Ferrite Transformation (DEFT) in low carbon (Mn) steels was investigated. The results show that the deformation causes such a higher defect density in austentie grains, which leads to extra sites for nucleation both at the austenite boundaries and intragranular, that ferrite grains are refined dramatically. The addition of C or Mn is favored to strain cumulated in the austenite, which also increases the nucleation sites, resulting in more pronounced ferrite grains refined. The promotive ability of C to refine ferrite grains is, however, much greater than that of Mn. |
| Keywords: | low carbon (Mn) steel DEFT nucleation rate grain refinement |
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