一、形状记忆现象及记忆种类在较高温度下给某固体材料一定的形状,然后在较低温度下施加应力使之变为另一形状。再加热时,一般固体材料将保持后一形状不变,但有些固体材料却能自动回复到前一形状,即它有记忆前一形状的能力,这种现象称为形状记忆现象。具有形状记忆能力的材料称形状记忆材料。 First, the phenomenon of shape memory and memory at a higher temperature to a certain shape of a solid material, and then apply stress at a lower temperature to make it into another shape. When reheating, the solid material will remain the same shape, but some solid materials will automatically return to the previous shape, that is, it has the ability to remember the previous shape. This phenomenon is called shape memory phenomenon. Materials that have shape memory capabilities are shape memory materials.