| 低碳微合金钢中针状铁素体的形成与控制 |
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| 引用本文： | 尚成嘉,胡良均,杨善武,王学敏,赵运堂,贺信莱.低碳微合金钢中针状铁素体的形成与控制[J].金属学报,2005,41(5):471-476. |
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| 作者姓名： | 尚成嘉 胡良均 杨善武 王学敏 赵运堂 贺信莱 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展规划项目1998061507
国家高技术研究发展计划项目2003AA331020资助 |
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| 摘 要： | 低碳微合金钢连续冷却时都会产生多种类型的中温转变组织，低冷速下主要得到粒状贝氏体组织，高冷速下主要得到板条贝氏体组织．连续冷却时，在较高中温转变温度范围可形成针状铁素体，其转变受冷却速度和过冷温度影响．通过控冷可以在低碳微合金钢中得到贝氏体和针状铁素体多相组织，利用针状铁素体能改善高强度低碳微合金钢的综合力学性能．
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| 关 键 词： | 多相组织 低碳微合金钢 针状铁素体 |
| 文章编号： | 0412-1961(2005)05-0471-06 |
FORMING AND CONTROLLING OF THE ACICULAR FERRITE IN LOW CARBON MICROALLOYED STEEL |
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| SHANG Chengjia,HU Liangjun,YANG Shanwu,WANG Xuemin,ZHAO Yuntang,HE Xinlai.FORMING AND CONTROLLING OF THE ACICULAR FERRITE IN LOW CARBON MICROALLOYED STEEL[J].Acta Metallurgica Sinica,2005,41(5):471-476. |
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| Authors: | SHANG Chengjia HU Liangjun YANG Shanwu WANG Xuemin ZHAO Yuntang HE Xinlai |
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| Affiliation: | SHANG Chengjia,HU Liangjun,YANG Shanwu,WANG Xuemin,ZHAO Yuntang,HE Xinlai School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083 |
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| Abstract: | Although the granular bainite and lath like bainitic ferrite are the main transformation phases after continuously cooling at low rate and fast rate of the low carbon microalloyed steel, the multi type transformation phases would appear at the different transformation temperature ranges. The acicular ferrite can be formed at higher intermediate temperature during continuously cooling. The nucleation and growth of the acicular ferrite are severely influenced by the cooling rate and undercooling temperature, and the fraction of the acicular ferrite can be controlled. The acicular ferrite and lath-like bainitic ferrite multi-phase microalloyed steel can be obtained by the control of cooling process. The acicular ferrite is benefit to improve the mechanical properties of low carbon microalloyed steel. |
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| Keywords: | multi-phase low carbon microalloyed steel acicular ferrite |
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