| 铁—铬—锰奥氏体合金辐照诱起相界面合金元素偏析 |
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| 引用本文： | 胡本芙,高桥平七郎,竹山太郎.铁—铬—锰奥氏体合金辐照诱起相界面合金元素偏析[J].北京科技大学学报,1987(3). |
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| 作者姓名： | 胡本芙 高桥平七郎 竹山太郎 |
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| 作者单位： | 北京钢铁学院
(胡本芙)，北京钢铁学院日本北海道大学
(高桥平七郎)，北京钢铁学院日本北海道大学(竹山太郎) |
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| 摘 要： | 研究了含有W、V的Fe-Cr-Mn奥氏体合金,经电子线辐照后析出相—基体相界面诱起溶质原子偏析行为。实验结果表明:合金中析出相为富Cr的M_(23)C6型碳化物。晶内析出相经辐照相界面处Cr的浓度增加,Mn的浓度降低。而晶界上和晶界近傍析出相的相界面Cr的浓度降低。合金元素Cr浓度的不同变化是与辐照诱起晶界偏析机构改变有关。 本文对此现象,应用辐照诱起晶界偏析理论,提出两种偏析机构的模型,较好的解释上述实验结果。
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| 关 键 词： | 辐照 晶界偏析 辐照损伤 扩散 |
Radiation-Induced Segregation at Precipitate-Matrix Interface in Fe-Cr-Mn Austenitic Alloy |
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| Hu Benfu Takahashi H. Takeyama T..Radiation-Induced Segregation at Precipitate-Matrix Interface in Fe-Cr-Mn Austenitic Alloy[J].Journal of University of Science and Technology Beijing,1987(3). |
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| Authors: | Hu Benfu Takahashi H Takeyama T |
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| Institution: | Hu Benfu Takahashi H. Takeyama T. |
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| Abstract: | The radiation-induced segregation at precipitate-matrix interface in Fe-Cr-Mn austenitic alloy containing W and V was investigated by electron irradiation. The results show that the precipitates are identified as M23C6 type chromium-carbides. Cr, W and V are enriched, but Mn and Ni tend to be depleted at precipitate-matrix interface within grain.The morphology of precipitates occurred to change at and near the grain bou- boundaries, while Cr is depleted at precipitate-matrix interface.The change of solute atom segregation behavior is directly related to segregation mechanisms.Two kinds of segregation phenomena of Cr concentration may be explained by the theory of radiation-induced segregation. |
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| Keywords: | radiation irradiation segregation austenitic alloy grain boundary precipitation carbide |
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