Development of Shape Memory Actuator for Cryogenic Application
Development of Shape Memory Actuator for Cryogenic Application
复制标题
低温应用形状记忆执行器的开发
DOI：
10.1007/978-1-84882-991-6_35
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Umemoto
中科院分区：
文献类型：
--
作者：
Koichi Tsushiya;T. Koyano;Seiichiro;Y. Todaka;M. Umemoto
形状记忆合金（SMA）是一种将热能转化为机械能的执行器材料。由于它具有比压电材料或磁致伸缩材料大得多的输出应变和应力。因此，SMA适用于极端环境和需要大运动和高能量密度的区域作为致动器材料。本研究的目的是开发可在低于液氮温度下工作的形状记忆合金。考察了晶粒尺寸和化学成分对TiNi和Cu-Al-Mn合金马氏体转变的影响。
Shape memory alloy (SMA) is one of actuator materials which converts thermal energy into mechanical energy. Since it has much larger output strain and stress compared to piezoelectric materials or magnetostrictive materials. Thus SMA is suitable as actuator materials for extreme environment and in the areas which require a large motion and high energy density. The purpose of present study is to develop the shape memory alloys which can operate at temperatures below liquid nitrogen temperature. Effect of grain size and chemical composition on martensitic transformation were assessed in TiNi and Cu-Al-Mn alloys.