形状记忆合金(英文).ppt

* * * * * * * Shape-memory alloy 请在此输入您的副标题 演讲者 2015.1.1 1 2 3 Shape-memory alloy Application in different fields The kinds of shape memory material What is the shape-memory alloy What is the shape-memory alloy？ Shape-memory alloy is a regular arrangement of atoms, the volume becomes less than 0.5% of the martensitic phase change alloy. This alloy may be deformed under the external force, when the external force is removed, at a certain temperature conditions, can restore the original shape. Because it has more than a million times to restore function, so called shape-memory alloys”. Of course, it is impossible to think like a human brain memory. The one-way shape memory effect Two-way shape memory effect The whole shape memory effect The kinds of shape memory material Memory alloy rib fractures with bone plates of the bone plate, not only can fixing two broken bones, and the recovery of the original shape of the compression force generated in the process, forcing the broken bones joined together. Medical Applications Aerospace Applications Shape memory alloy is used as a satellite or spacecraft on the hemispherical reticular bootstrapping antenna. First put the antenna folded into a small ball in the low temperature in satellite or spacecraft, launched or after liftoff, by heat or use the solar energy can make the antenna from the folded state into work state. Application in life Lighting - “petals” using nickel-titanium shape memory alloy materials, “petals” in the corresponding temperature slowly bloom. * For example, the frame which made of memory alloy, if you touch bent accidentally, just put it into hot water heating, then it recover. 记忆合金材料镜架 随温度变化而变化的汤匙 The metal spoon is straight at room temperature , only in the hot drink or heating by other methods，it can be bending, and straightened after cooling. * * * * * * *