OALib Journal期刊
ISSN: 2333-9721
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Ta含量对Nb-Nb5Si3共晶合金的组织和压缩性能的影响
, PP. 1061-1064
Keywords: Nb/,Nb5Si3原位复合材料,金属间化合物,合金
Abstract:
采用真空电弧熔炼方法制备了不同Ta含量的Nb/Nb5Si3原位复合材料,研究了Ta对材料的组织和力学性能的影响.结果表明Ta分布在Nb基固溶体相和Nb5Si3相中,且在Nb基固溶体中的含量要高一些.随Ta含量的增加,合金中Nb5Si3相逐渐减少,Nb基固溶体相逐渐增多;Ta促使β-Nb5Si3相转变为α-Nb5Si3相;Ta的加入有利于合金室温和高温强度的提高,Ta含量为5at.%的合金高温力学性能最佳.
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