| 铌微合金化HSLA钢铁素体中Nb(C,N)析出强化的研究进展 |
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| 引用本文： | 韦青峰.铌微合金化HSLA钢铁素体中Nb(C,N)析出强化的研究进展[J].特殊钢,2007,28(5):42-44. |
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| 作者姓名： | 韦青峰 |
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| 作者单位： | 攀枝花钢铁研究院材料所,攀枝花 617000 |
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| 摘 要： | 介绍了含微量铌的高强度低合金(HSLA)钢铁素体中Nb(C,N)析出的数学模型,以及计算经900～1200℃奥氏体化处理后的铁素体中NbC形核半径、形核率和形核长大率。一些研究者的试验结果表明,Nb的碳氮化物在铁素体上的析出需要较高的位错密度,与奥氏体中形成的NbC相比较,铁素体中形成的NbC相对较少,在680℃卷取钢板的抗拉强度较未经卷取直接空冷至室温的钢板抗拉强度有明显提高。
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| 关 键 词： | 高强度低合金钢 铁素体 铌 析出强化 |
| 收稿时间： | 2007-04-12 |
| 修稿时间： | 2007-04-12 |
Progress in Study on Precipitation Strengthening of Nb(C, N )in Ferrite of Niobium Microalloying HSLA Steel |
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| Wei Qingfeng.Progress in Study on Precipitation Strengthening of Nb(C, N )in Ferrite of Niobium Microalloying HSLA Steel[J].Special Steel,2007,28(5):42-44. |
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| Authors: | Wei Qingfeng |
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| Affiliation: | Panzhihua Iron and Steel Research Institute, Panzhihua 617000 |
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| Abstract: | Mathematical model for Nb( C ,N) precipitation in ferrite of micro niobium HSLA steel and calculated NbC nucleation radius, nucleation rate and growth rate in ferrite with 900 ~ 1200 ℃. austenization are presented. The test results by some authors indicated the precipitation of niobium carbo-nitride needed higher dislocation density and the amount of NbC formed in ferrite was relatively minor as compared with that formed in austenite； and the tensile strength of steel sheet with coiled at 680 °C was obviously higher than that of sheet without coiled direct cooling to room temperature. |
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| Keywords: | HSLA Steel Ferrite Niobium Precipitation Strengthening |
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