| Hf对铁素体钢中辐照引起的晶间偏析的影响 |
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| 引用本文： | 吕铮,R. G. Faulkner,坂口纪史,木下博嗣,高桥平七郎. Hf对铁素体钢中辐照引起的晶间偏析的影响[J]. 金属学报, 2006, 42(10): 1041-1045 |
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| 作者姓名： | 吕铮 R. G. Faulkner 坂口纪史 木下博嗣 高桥平七郎 |
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| 作者单位： | [1]Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Lecestershire LE11 3TU, UK [2]Center for Advanced Research of Energy Technology, Hokkaido University, North 13, West 8, Sapporo 060-8628, Japan [3]Berkeley Centre, Magnox Electric, Berkeley, Gloucestershire GL13 9PB, UK |
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| 摘 要： | 1％Hf（质量分数）被注入E911钢中．利用250keV的Ni离子在300℃辐照含Hf和不含Hf的E911钢，以研究Hf的添加对铁素体／马氏体钢中由辐照引起的偏析的影响．结果表明，Hf的添加抑制了晶界上P原子的富集和Cr原子的贫化．讨论和评估了Hf对自由迁移的缺陷数量的影响，结合一个辐照引起的非平衡偏析（RIS）模型以预测Hf对P3Cr等元素的晶界偏析行为的作用．对预测结果和实验数据作了比较．
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| 关 键 词： | Hf 铁素体钢 辐照 偏析 |
| 文章编号： | 0412-1961（2006）10-1041-05 |
| 收稿时间： | 2006-03-18 |
| 修稿时间： | 2006-03-182006-06-04 |
Effect of Hafnium on Radiation-induced Inter-granular Segregation in Ferritic Steel |
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| Z. Lu,R. G. Faulkner,SAKAGUCHI Norihito,KINOSHITA Hiroshi,TAKAHASHI Heishichiro,P. E. J. Flewitt. Effect of Hafnium on Radiation-induced Inter-granular Segregation in Ferritic Steel[J]. Acta Metallurgica Sinica, 2006, 42(10): 1041-1045 |
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| Authors: | Z. Lu R. G. Faulkner SAKAGUCHI Norihito KINOSHITA Hiroshi TAKAHASHI Heishichiro P. E. J. Flewitt |
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| Affiliation: | Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Lecestershire LE11 3TU, UK;University, Loughborough, Lecestershire LE11 3TU, UK;Center for Advanced Research of Energy Technology, Hokkaido University,North 13, West 8, Sapporo 060-8628, Japan;Berkeley Centre, Magnox Electric, Berkeley, Gloucestershire GL13 9PB, UK |
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| Abstract: | Ferritic steels with and without hafnium (Hf) addition were irradiated by 250 keV nickel-ions at 300 oC in a ion accelerator attached to the Multi-beam High Voltage Electron Microscope (JEOL ARM1300) to study the influence of Hf additions on radiation-induced segregation in a ferritic/martenitic steel. Grain boundary segregation of phosphorus, silicon, chromium and molybdenum were measured by field emission gun transmission electron microscopy with an energy dispersive analyser. The results show that radiation induces the enrichment of undersized atoms (P) and the depletion of oversized atoms (Cr) in the materials without Hf addition. The addition of Hf suppresses radiation-induced undersized atom enrichment and oversized atom depletion. A radiation-induced non-equilibrium segregation (RIS) model is developed to predict undersized and oversized atom segregation behaviour at the grain boundary. The effect of hafnium on freely migrating defect population is discussed and estimated to indicate the effect of the element on segregation behaviour of the elements like P and Cr in the ferritic steel. The predicted results are compared with experimental data. |
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| Keywords: | Hf |
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