The transformation characteristics of the NiTi-V composite with dual-scale bcc-V fibers
The transformation characteristics of the NiTi-V composite with dual-scale bcc-V fibers
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双尺度bcc-V纤维NiTi-V复合材料的相变特性
DOI：
10.1016/j.intermet.2019.106650
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发表时间：
2020-01-01
期刊：
影响因子：
4.4
通讯作者：
Jiang, Jiang
中科院分区：
文献类型：
--
作者：
Yang, Hongliang;Chen, Jian;Jiang, Jiang
本文采用铸造、锻造和拉拔工艺制备了V40 Ni 31 Ti 29合金丝材。研究了具有bcc-V双尺度的V40 Ni 31 Ti 29合金丝材的相变特性。结果表明，B19 '-> B2转变峰温度高于100 ℃，并随着退火温度的升高而降低。其相变温度范围约为80 ℃，远高于V元素含量较低的NiTiV合金的结果。我们认为这一结果与V纳米线和微纤维的塑性变形不同有关。拉伸加载-卸载循环后，由于V纤维的塑性变形，B2 R转变温度升高。
In this work, the V40Ni31Ti29 alloy wires were acquired by casting, forging and drawing process. The transformation characteristics of the V40Ni31Ti29 alloy wires with dual-scale bcc-V were studied. The results suggest that B19'-> B2 transformation peak temperatures are higher than 100 degrees C and decreases with the increasing annealing temperature. The transformation temperature range is about 80 degrees C, which is much higher than the results of NiTiV alloys with lower V element content. We propose that this result is dosely related to the differrent plastic deforamtion of V nanowires and micro fibers. The B2 R transformation temperatures increased after tension loading-unloading cycle, which is ascribed to the plastic deformation of V fibers.