| NiAl合金(B_2结构)的偏析现象 |
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| 引用本文： | 刘静,聂惠权,周瑛玮,程维,李国珍.NiAl合金(B_2结构)的偏析现象[J].东北大学学报(自然科学版),1999,20(2):3-212. |
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| 作者姓名： | 刘静 聂惠权 周瑛玮 程维 李国珍 |
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| 作者单位： | 东北大学理学院 |
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| 基金项目： | 辽宁省自然科学基金;810300303; |
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| 摘 要： | 采用ＬＭＴＯ ＣＰＡ方法,计算了ＮｉＡｌ合金(Ｂ２结构)在成分无序情况下的热力学性质,并讨论了ＮｉＡｌ合金的偏析现象·理论结果表明,当Ｎｉ的成分小于３５％(原子分数)时,则ＮｉＡｌ合金表面出现Ａｌ的偏析现象,当Ｎｉ的成分大于３５％(原子分数)时,则出现Ｎｉ的偏析现象·
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| 关 键 词： | NiAl合金 偏析现象 LMTO-CPA |
Investigation on the Segregation of NiAl Alloy |
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| Liu Jing,Nie Huiquan,Zhou Yingwei,Cheng Wei,Li Guozhen.Investigation on the Segregation of NiAl Alloy[J].Journal of Northeastern University(Natural Science),1999,20(2):3-212. |
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| Authors: | Liu Jing Nie Huiquan Zhou Yingwei Cheng Wei Li Guozhen |
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| Abstract: | The thermodynamic properties of the disordered NiAl alloy was calculated and the segregation of the disordered NiAl alloy was discussed with B 2 structure by using LMTO CPA method. When the concentration of Ni in the NiAl alloy is less than 35at%,there is the segregation of Al on the surface of NiAl alloy. When the concentration of Ni is larger than 35at%,there is the segregation of Ni on the surface of NiAl alloy. These theoretical results are in good agreement with the experimental results. |
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| Keywords: | LMTO-CPA |
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