| Al、Si及Y多元合金化对Cr-20Nb合金高温氧化行为的影响 |
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| 引用本文： | 郑海忠,鲁世强.Al、Si及Y多元合金化对Cr-20Nb合金高温氧化行为的影响[J].稀有金属材料与工程,2011,40(3):433-437. |
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| 作者姓名： | 郑海忠 鲁世强 |
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| 作者单位： | 南昌航空大学,江西,南昌,330063 |
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| 基金项目： | 国家自然科学基金(50474009，51074092)；航空科学基金(05G56003)；博士启动金(EA200901372)；江西省自然科学基金（2010GQC0154）；江西省材料工程中心项目(ZX200901002) |
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| 摘 要： | 针对软第二相Cr稍微降低Laves相NbCr2合金的1200℃抗氧化性,采用Al、Si及Y多元合金化来提高Cr-20Nb合金的高温抗氧化性能。结果表明,多元合金化的Cr-20Nb合金1100℃及1200℃抗氧化性均好于加入单一合金化的及纯Cr-20Nb合金,并随着Si合金元素含量增加,Cr-20Nb合金的氧化增重变小,抗氧化性变好;SEM结果表明,添加合金元素后,氧化膜与基体的粘附性得到了明显提高。
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| 关 键 词： | Cr-20Nb合金 合金化 氧化行为 |
| 收稿时间： | 2010/3/25 0:00:00 |
Effect of Multiple Elements Al, Si and Y on High Temperature Oxidation of Cr-20Nb Alloys |
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| Zheng Haizhong and Lu Shiqiang.Effect of Multiple Elements Al, Si and Y on High Temperature Oxidation of Cr-20Nb Alloys[J].Rare Metal Materials and Engineering,2011,40(3):433-437. |
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| Authors: | Zheng Haizhong and Lu Shiqiang |
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| Affiliation: | Nanchang Hangkong University, Nanchang 330063, China |
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| Abstract: | To resolve the problem that ductile phase Cr decreases slightly the oxidation resistance of Laves phase NbCr2 alloys at 1200 oC, multiple elements Al, Si and Y were added to Cr-20Nb alloys. The results indicate that the oxidation resistance of Cr-20Nb alloys alloyed by multi elements is higher than that of unalloyed Cr-20Nb and Cr-20Nb alloyed by single element. Moreover, the oxidation resistance of Cr-20Nb alloys increases with increasing the Si content. SEM analysis shows that the additions improve the adhesion of oxide film on the matrix |
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| Keywords: | Cr-20Nb alloy alloying oxidation behavior |
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