| 铈对Fe_3Al室温力学性能的改善作用 |
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| 引用本文： | 郭军,张忠铧.铈对Fe_3Al室温力学性能的改善作用[J].兵器材料科学与工程,1996,19(1):10-14,28. |
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| 作者姓名： | 郭军 张忠铧 |
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| 作者单位： | 东南大学 |
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| 摘 要： | 在二元Ｆｅ３Ａｌ中添加适量的铈（Ｃｅ）可以显著提高合金的室温强度和塑性，尤其是将微量Ｃｅ加入三元Ｆｅ－２８Ａｌ－２Ｃｒ合金时，室温延伸率可达２２．２％。ＸＰＳ研究表明，这是由于Ｃｅ的加入钝化了合金表面的氧化膜，抑制或推迟了Ａｌ和环境水汽的反立。此外Ｃｅ的加入导致了Ｆｅ３Ａｌ基体的晶粒细化和第二相颗粒的析出。
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| 关 键 词： | Fe_3Al，铈，力学性能，X射线光电子能谱 |
IMPROVEMENT OF CERIUM ADDITION TO ROOM TEMPERATURE MECHANICAL PROPERTIES OF Fe3Al |
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| GuoJun,Zhang Zhonghua,Sun Yongshan,.IMPROVEMENT OF CERIUM ADDITION TO ROOM TEMPERATURE MECHANICAL PROPERTIES OF Fe3Al[J].Ordnance Material Science and Engineering,1996,19(1):10-14,28. |
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| Authors: | GuoJun Zhang Zhonghua Sun Yongshan |
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| Abstract: | Suitabal amount of cerium addition to the binary Fe3Al alloy increases the ductility and strength at room temperature significantly.Especially,the room temperature elongation reaches as high as 22.2% whe microalloving of cerium is used to the ternary Fe-28A1-2Cr alloy.XPS study shows that cerium addition passivates the oxide film on specimen surface,which restrains the reactions between environmontal water and Al in the alloys.Cerium addition also causes the refinemcnt of miorostructure and the formation of many cerium-rich precipitates dispersing in the matrix. |
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| Keywords: | s:Fe3Al Cerium mechanical properties optical electronic spectrum |
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