| 微合金钢中夹杂物诱导晶内铁素体析出行为 |
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| 引用本文： | 尚德礼,吕春风.微合金钢中夹杂物诱导晶内铁素体析出行为[J].北京科技大学学报,2008,30(8). |
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| 作者姓名： | 尚德礼 吕春风 |
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| 作者单位： | 鞍钢股份有限公司技术中心,鞍山,114009 |
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| 摘 要： | 通过热力学计算及实验,研究了微合金钢加钛脱氧后钢液中夹杂物的形态、组成、尺寸和类型,分析了加钛前后钢的组织变化.结果表明:加钛后,钢的组织明显细化,钛的脱氧产物可成为TiN夹杂的形核核心,还可以包覆在Al2O3夹杂周围,此类夹杂物呈细小弥散析出;这些细小的夹杂物可以在奥氏体晶粒内部诱发晶内铁素体析出,从而产生细化组织的效果.
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| 关 键 词： | 微合金钢 氧化物冶金 夹杂物 晶内铁素体 |
Precipitation behavior of inclusions-induced formation nucleation of intragranular ferrite in micro-alloyed steel |
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| SHANG Deli,LV Chunfeng.Precipitation behavior of inclusions-induced formation nucleation of intragranular ferrite in micro-alloyed steel[J].Journal of University of Science and Technology Beijing,2008,30(8). |
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| Authors: | SHANG Deli LV Chunfeng |
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| Abstract: | The morphology,chemical composition,size and type of inclusions were investigated by experiment and thermodynamic calculation in a micro-alloyed steel deoxidized by Ti,and the structure of this steel was analyzed.The results show that grains are fine after adding Ti in the steel,the deoxidation product of Ti become the nucleus of TiN,or Al2O3 becomes the nucleus of the deoxidation product of Ti in solidification of liquid steel.After adding Ti,inclusions are finely distributed in the steel,and grains are fine by using the dispersion of fine inclusions as intragranular ferrite nucleated sites. |
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| Keywords: | micro-alloyed steel oxide metallurgy inclusions intragranular ferrite |
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