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一、记忆合金记忆合金是金属合金中的一个系列,它有记忆的特性,能恢复到最初加工时建立的设计形状。这个特性就是众所周知的“形状记忆效应”(SME)。形状变化能反复发生,并在合金通过特征转变温度的时候而变化,特征温度取决于合金的组成。形状变化是材料中原子重新排列的结果。在变化过程中,合金具有做功的本领,例如,SME弹簧本身仅重几克,但能提起重1千克以上的物体。很显然,这样的材料,可用作开关的传动机构和随温度变化而启动的阀门。记忆合金最初由美国海军军械实验室研究成
First, the memory alloy Memory alloy is a series of metal alloys, it has the memory characteristics, can be restored to the original shape of the design process. This feature is known as the “shape memory effect” (SME). Shape changes can occur repeatedly and change as the alloy passes the characteristic transition temperature, and the characteristic temperature depends on the composition of the alloy. Shape changes are the result of the rearrangement of atoms in the material. In the process of change, the alloy has the ability to work, for example, the SME spring itself weighs a few grams, but can lift objects weighing more than 1 kg. Obviously, such a material can be used as a switch gear and a valve that starts up as a function of temperature. Memory alloy was originally developed by the U.S. Navy Armed Forces Laboratory