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| 三维原子探针对微合金钢中G.P.区的观测 | |
| 引用本文： | 刘文庆,刘庆冬,李聪,方淑芳,周邦新.三维原子探针对微合金钢中G.P.区的观测[J].江苏大学学报(自然科学版),2008,29(2):131-133. |
| 作者姓名： | 刘文庆 刘庆冬 李聪 方淑芳 周邦新 |
| 作者单位： | 1. 上海大学分析测试中心,上海,200444 2. 中科华核电技术研究院,江苏,苏州,215004 3. 攀枝花钢铁研究院,四川,攀枝花,617000 |
| 基金项目： | 上海市科委纳米专项(0552nm049) |
| 摘 要： | 对Nb-V微合金钢进行模拟控轧控冷试验,利用光学显微镜、场离子显微镜、三维原子探针等测试分析技术和手段,研究铁素体基体中碳化物析出早期阶段的特点.用三维原子探针研究基体中碳化物的析出过程,发现在NbC析出初期,C和Nb原子在铁素体同一个(001)原子面上发生偏聚,且质量分数都不到5%,认为这是在基体中形成的G.P.区. |
| 关 键 词： | 微合金钢 G.P.区 三维原子探针 NbC析出 偏聚 |
| 文章编号： | 1671-7775(2008)02-0131-03 |
| 修稿时间： | 2007年7月5日 |
Three dimensional atom probe observation of G. P. zone in micro-alloyed steel |
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| LIU Wen-qing,LIU Qing-dong,LI Cong,FANG Shu-fang,ZHOU Bang-xin.Three dimensional atom probe observation of G. P. zone in micro-alloyed steel[J].Journal of Jiangsu University:Natural Science Edition,2008,29(2):131-133. | |
| Authors: | LIU Wen-qing LIU Qing-dong LI Cong FANG Shu-fang ZHOU Bang-xin |
| Abstract: | By applying the techniques of optical microscope, field ion microscope(FIM) and three-dimensional atom probe(3DAP),the carbides precipitated from ferrite matrix on the early stage of niobium and vanadium micro-alloyed steels were characterized.3DAP was carried out to investigate the carbides precipitate process in niobium and vanadium micro-alloyed steels.Niobium and carbon atoms segregating at a ferrite matrix(001) plane and the concentration of less than 5% were observed in the matrix during the initial precipitating stages of NbC.The monolayer enrichment zone of niobium and carbon atoms was considered as G.P.zone. |
| Keywords: | micro-alloyed steel G P zone three-dimensional atom probe(3DAP) NbC precipitate segregate |
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