低碳微合金双相钢沉淀相粒子的分析

特殊钢 ›› 2008, Vol. 29 ›› Issue (4): 55-57.

低碳微合金双相钢沉淀相粒子的分析

陈连生^1,2, 李秀景², 褚春光³, 高华³, 耿立唐³

1 东北大学轧制技术及连轧自动化国家重点实验室，沈阳110004;
2 河北理工大学冶金与能源学院，唐山063009;
3 唐山钢铁公司第一钢轧厂，唐山063016

收稿日期:2008-01-11 出版日期:2008-08-01 发布日期:2022-12-23
作者简介:陈连生(1968-),男，1998年燕山大学硕士毕业，金属材料组织性能预报与控制。
基金资助:
河北省自然基金项目资助(E2006000353)

An Analysis on Precipitated Phase Particles in Low Carbon Micro-Alloying Dual Phase Steel

Chen Liansheng^1,2, Li Xiujing², Chu chunguang³, Gao Hua³, Geng Litang³

1 The State Key Laboratory of Rolling& Automation,Northeast University,Shenyang 110004;
2 School of Metallurgy and Energy Resources,Hebei Polytechnic University,Tangshan 063009;
3 Nol Mill,Tangshan Iron and Steel Co,Tangshan 063016

Received:2008-01-11 Published:2008-08-01 Online:2022-12-23

摘要/Abstract

摘要： 采用萃取复型技术研究了实验室Φ450轧机控轧控冷后铁素体-马氏体双相钢(%:0.08C、0.22Si、1.02Mn、0.02Nb、0.013Ti、0.034Al)中沉淀相粒子。结果表明,该钢在1200℃时就存在尺寸为几十纳米的(Nb,Ti) (CN),经X-射线能谱分析得出,小颗粒中Nb含量大于Ti含量,形状不规则,大颗粒沉淀相主要含Ti,Nb含量较少,呈长方形;经控轧控冷后(Nb,Ti)(CN)为间隙析出,且主要在晶界处析出。

关键词: 双相钢, 铁素体-马氏体, , 沉淀相粒子, , 萃取复型

Abstract: The precipitated phase particles in ferrite-martensite dual phase steel(0.08C,0.22Si,1.02Mn, 0.02Nb,0.013Ti,0.034Al)rolled by φ450 mill with control rolling and cooling process in laboratory has been studied by using carbon extraction-replica technique.Results showed that there was(Nb,Ti)(CN)precipitates with size being doz- ens nm at 1200 ℃; with energy dispersive X-ray spectrometer analysis,the Nb content in smaller particles was higher than Ti content of which the shape was irregular,and in large particle of which the shape was rectangle,main content was Ti with minor Nb; and in steel by control rolling and cooling,the(Nb,Ti)(CN)was interstitial precipitated phase and mainly precipitated at grain-boundary.

陈连生, 李秀景, 褚春光, 高华耿立唐. 低碳微合金双相钢沉淀相粒子的分析[J]. 特殊钢, 2008, 29(4): 55-57.

Chen Liansheng, Li Xiujing, Chu chunguang, Gao Hua, Geng Litang. An Analysis on Precipitated Phase Particles in Low Carbon Micro-Alloying Dual Phase Steel[J]. Special Steel, 2008, 29(4): 55-57.