Property of TiNi Shape Memory Foils Produced by Ultrafine Laminates Method
Property of TiNi Shape Memory Foils Produced by Ultrafine Laminates Method
复制标题
DOI：
10.4028/www.scientific.net/msf.449-452.1321
复制
发表时间：
2004-03
期刊：
影响因子：
--
通讯作者：
K. Tsuchiya;D. Tomus;M. Umemoto;M. Sasaki;Toshiki Ohmori
中科院分区：
文献类型：
--
作者：
K. Tsuchiya;D. Tomus;M. Umemoto;M. Sasaki;Toshiki Ohmori
使用超细层压法，生产了富镍TiNi形状记忆合金的薄箔（50 µm）。Ti/Ni层压体的总体组成为Ti-50.7%Ni。在1073 K、36 ks条件下进行不同的扩散处理后，得到了TiNi（B2）相。在773 K下进行3.6、18、36、72和144 k的时效处理。时效箔的相变行为由两步→三步→两步转变，与块体TiNi合金的相变行为相似。透射电子显微镜观察到时效样品中Ti 3 Ni 4相分布均匀。时效后的TiNi箔具有双向形状记忆效应。
Using the ultrafine laminate method, thin foils (50 µm) of Ni-rich TiNi shape memory alloys were produced. Overall composition of the Ti/Ni laminate is Ti-50.7%Ni. TiNi (B2) phase was obtained after different diffusion treatments at 1073 K for 36 ks. Aging treatment at 773 K for 3.6, 18, 36, 72 and 144 ks were also performed. Phase transformation behavior of aged foils changed from two-step, to three-step and then to two-step transformation, which is similar to the case of bulk TiNi alloys. Uniform distribution of Ti3Ni4 phase was observed for aged samples by transmission electron microscopy. Two-way shape memory effect of the aged TiNi foil was also demonstrated.