| 钒氮钢中晶粒细化研究 |
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| 引用本文： | 龚维幂,杨才福,张永权.钒氮钢中晶粒细化研究[J].钢铁研究学报,2006,18(10):49-0. |
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| 作者姓名： | 龚维幂 杨才福 张永权 |
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| 作者单位： | 钢铁研究总院结构材料研究所,北京,100081 |
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| 摘 要： | 采用Gleeble 3500热模拟试验机，在相同工艺条件下，对比研究了钒氮钢、钒钢以及碳锰钢的晶粒细化效果。结果表明，钒氮钢的晶粒细化效果最显著，铁素体的晶粒尺寸可达61 μm，这主要与在奥氏体区中析出的V(C，N)有关。奥氏体区析出的V(C，N)，不但可抑制奥氏体晶粒长大，同时还可以作为铁素体的形核核心，诱导晶内铁素体形成，大大增加铁素体形核率，从而提高了相变细化的比率。
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| 关 键 词： | V(C N) 晶内铁素体 晶粒细化 |
| 文章编号： | 1001-0963（2006）10-0049-05 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2005-09-12 |
Grain Refinement in V-N Steel |
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| GONG Wei-mi,YANG Cai-fu,ZHANG Yong-quan.Grain Refinement in V-N Steel[J].Journal of Iron and Steel Research,2006,18(10):49-0. |
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| Authors: | GONG Wei-mi YANG Cai-fu ZHANG Yong-quan |
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| Affiliation: | Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China |
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| Abstract: | The size of austenite and ferrite in V-N steel,V-steel and C-Mn steel in the same condition was investigated.The results show that grain refinement effect in V-N steel is most remarkable.The further analysis indicates that the precipitation of V(C,N) in austenite is the vital factor of grain refinement in V-N steel.On the one hand,the precipitation of V(C,N) in austenite can prevent austenite grain growth;on the other hand,V(C,N) can promote the nucleation of ferrite by inducing formation of intragranular ferrite as nucleus,which increases nucleation ratio markedly. |
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| Keywords: | V(C N) intragranular ferrite grain refinement |
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