| 稀土元素La,Ce对93WNiFe合金力学性能的影响 |
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| 引用本文： | 张朝晖,苗凯,王富耻. 稀土元素La,Ce对93WNiFe合金力学性能的影响[J]. 北京理工大学学报, 2006, 26(2): 104-106 |
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| 作者姓名： | 张朝晖 苗凯 王富耻 |
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| 作者单位： | 北京理工大学,材料科学与工程学院,北京,100081;北京理工大学,材料科学与工程学院,北京,100081;北京理工大学,材料科学与工程学院,北京,100081 |
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| 摘 要： | 通过粉末冶金方法制备了添加稀土元素La,Ce的93W-4.9Ni-2.1Fe合金,研究了稀土元素对高密度93钨合金静、动态力学性能的影响. 结果表明,添加少量的稀土元素La,Ce可以显著提高93钨合金的力学性能. La,Ce的加入使合金断口上钨-钨界面分离和钨-粘结相界面开裂的比例减少,钨颗粒解理断裂和基体相韧性撕裂的比例增加. 稀土元素La,Ce改变了氧和硫在合金中的存在与分布状态,减小了其在钨-粘结相界面的偏聚,从而改善了合金的力学性能.
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| 关 键 词： | 高密度钨合金 稀土元素 静态力学性能 动态力学性能 |
| 文章编号： | 1001-0645（2006）02-0104-04 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005-07-14 |
Influence of Rare Earth Elements La and Ce on the Mechanical Properties of Alloy 93WNiFe |
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| ZHANG Zhao-hui,MIAO Kai and WANG Fu-chi. Influence of Rare Earth Elements La and Ce on the Mechanical Properties of Alloy 93WNiFe[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2006, 26(2): 104-106 |
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| Authors: | ZHANG Zhao-hui MIAO Kai WANG Fu-chi |
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| Affiliation: | School of Materials Science and Engineering, MIAO Kai, WANG Fu-chi Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The effects of adding rare earth elements La, Ce prepared through powder metallurgy on the static and dynamic mechanical properties of alloy 93WNiFe were studied. The results showed that the addition of a small amount of La, Ce to 93WNiFe improved markedly the mechanical properties. The addition of La, Ce reduces the detaching of W-W and W-M interfaces and increases the cleavage of W pellets and binder fracture. La, Ce changes the existence and distribution states of impurity elements oxygen and sulfur, reduces the segregation of oxygen and sulfur elements at the W-binder interface, and improves the mechanical properties. |
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| Keywords: | tungsten heavy alloys rare earth elements static mechanical properties dynamic mechanical properties |
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