Hf对铁素体钢中辐照引起的晶间偏析的影响

金属学报, 2006, 42(10): 1041-1045. doi: 10.3321/j.issn:0412-1961.2006.10.008

Hf对铁素体钢中辐照引起的晶间偏析的影响

吕铮 ^1, , R. G. Faulkner ^2, , 坂口纪史 ^3, , 木下博嗣 ^4, , 高桥平七郎 ^5, , P. E. J. Flewitt ^6,

1.Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Lecestershire LE11 3TU, UK

2.University, Loughborough, Lecestershire LE11 3TU, UK

3.Center for Advanced Research of Energy Technology, Hokkaido University,North 13, West 8, Sapporo 060-8628, Japan

4.Center for Advanced Research of Energy Technology, Hokkaido University,North 13, West 8, Sapporo 060-8628, Japan

5.Center for Advanced Research of Energy Technology, Hokkaido University,North 13, West 8, Sapporo 060-8628, Japan

6.Berkeley Centre, Magnox Electric, Berkeley, Gloucestershire GL13 9PB, UK

关键词： Hf , 铁素体钢 , 辐照 , 偏析

THE ROLE OF Hf IN RADIATION-INDUCED INTER-GRANULAR SEGREGATION IN FERRITIC STEEL

1%Hf(质量分数)被注入E911钢中.利用250 keV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P,Cr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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