Effect of nitrogen addition and annealing temperature on superelastic properties of Ti–Nb–Zr–Ta alloys
Effect of nitrogen addition and annealing temperature on superelastic properties of Ti–Nb–Zr–Ta alloys
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DOI：
10.1016/j.msea.2010.07.052
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发表时间：
2010-10
期刊：
影响因子：
6.4
通讯作者：
M. Tahara;H. Y. Kim;H. Hosoda;T. Nam;S. Miyazaki
中科院分区：
文献类型：
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作者：
M. Tahara;H. Y. Kim;H. Hosoda;T. Nam;S. Miyazaki
研究了Ti-Nb-4 Zr-2 Ta-N合金的力学性能和马氏体相变行为与成分的关系。比较了退火温度对加氮和不加氮合金的显微组织演变和超弹性性能的影响。N的加入使Ti-Nb-4 Zr-2 Ta合金的Ms降低了约200 K/1at.%提高了Ti-Nb-4 Zr-2 Ta合金的超弹性性能。α相的溶解提高了无N合金的马氏体相变起始温度，降低了超弹性回复应变，而对加N合金则产生相反的效应。在显微组织观察的基础上，讨论了不同退火温度对超弹性性能的影响。
The composition dependence of the mechanical properties and martensitic transformation behavior of Ti–Nb–4Zr–2Ta–N alloys is investigated. The effect of annealing temperature on the microstructural evolution and superelastic properties in the N-added and N-free alloys is compared. The addition of N decreases Msof Ti–Nb–4Zr–2Ta alloys by about 200K per 1at.%N and improves the superelastic properties of Ti–Nb–4Zr–2Ta alloys. The dissolution of α phase increases the martensitic transformation start temperature and decreases the superelastic recovery strain for the N-free alloy, whereas it causes opposite effects for the N-added alloy. The different annealing temperature dependences of superelastic properties are discussed on the basis of microstructure observation.