Effects of morphology of V nanowires on superelasticity of Ti46Ni44V10 alloy
Effects of morphology of V nanowires on superelasticity of Ti46Ni44V10 alloy
复制标题
V纳米线形貌对Ti46Ni44V10合金超弹性的影响
DOI：
10.1016/j.msea.2020.139450
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发表时间：
2020-06-01
期刊：
影响因子：
6.4
通讯作者：
Li, Yongtao
中科院分区：
文献类型：
--
作者：
Chen, Jian;Yao, Xudong;Li, Yongtao
研究了V纳米线的形貌对Ti46Ni44V10合金超弹性的影响。显微结构分析表明，随着冷拉变形量的增加，V纳米线的直径减小，连续性提高。上平台应力随退火温度的升高而减小，随冷加工次数的增加而增大。超弹性应变随退火温度的升高而减小。然而，它独立于冷加工。应力滞后随着面积减少量的增加而增加，当面积减少量大于40%时，在400 ℃退火的样品比在350 ℃退火的样品表现出更大的滞后。因此，我们发现，对Ti46Ni44V10合金的超弹性的影响是密切相关的V纳米线和NiTi相的形态。
The present study investigated the effects of morphology of V nanowires on superelasticity of Ti46Ni44V10 alloy. The microstructure analysis revealed that the diameter of V nanowires decreased and the continuity improved with an increase in cold drawn deformation. The upper plateau stress decreased with the increase in annealing temperature and increased with the increase in cold working. Furthermore, the superelastic strain decreased with the increase in annealing temperature. However, it was independent of cold working. The stress hysteresis increased with the increase in area reduction, and the samples annealed at 400 degrees C exhibited a larger hysteresis than those annealed at 350 degrees C when the area reduction was more than 40%. Thus, we found that, the effects on superelasticity of Ti46Ni44V10 alloy were closely related to the morphology of V nanowires and the NiTi phase.