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波音航天航空器的研究者 Nyron Brudnicki研制了一种形状记忆旋转作动器。据说,打开或关闭一个旋转阀门后,作动器就能极其迅速地旋转90°。它是通过基于形状记忆的热机械旋转作动器来实现其旋转的。它的关键是钛和镍以等原子比组成的记忆合金材料。当转变温度低于52℃时,该合金处于一种马氏体低强状态;高于52℃时,处于奥氏体高强状态。在转变温度以下进行拉伸后,如果再加热到转变温度以上合金将返回到原来的长度。在合金丝缠绕在绞盘上以前,将
Nyron Brudnicki, a Boeing aerospace researcher, has developed a shape memory rotary actuator. It is said that when a rotary valve is opened or closed, the actuator can rotate 90 ° very quickly. It is based on the shape memory of the thermo-mechanical rotation actuator to achieve its rotation. Its key is the memory alloy material of titanium and nickel with equal atomic ratio. When the transition temperature is lower than 52 ℃, the alloy is in a low martensite state; above 52 ℃, it is in the state of high austenite. After stretching below the transition temperature, the alloy will return to its original length if reheated above the transition temperature. Before the alloy wire is wound on the capstan