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Influence of Rare Earth Elements La and Ce on the Mechanical Properties of Alloy 93WNiFe
Author(s): 
Pages: 104-106,111
Year: Issue:  2
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  高密度钨合金稀土元素静态力学性能动态力学性能;
Abstract: 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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