Memory metals reforming under heat

Memory metals reforming under heat

T742/0024 Rights Managed

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This image is part of the feature Memory Metals

Credit: PHILIPPE PLAILLY/SCIENCE PHOTO LIBRARY

Caption: Memory metal. First in a series of three images showing samples of a memory metal regaining their original shape under heat. Memory metals are alloys of nickel, titanium & aluminium or copper. Once manufactured in a certain shape (here an 'S'), they may be deformed with little effort, but regain their shape upon gentle heating. This property depends on the atomic structure of the alloy; with gentle heat the alloy becomes plastic and is able to re-arrange the relative positions of its atoms to the minimum energy structure in which it was manufactured. Compare with T742/025 and T742/026.

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Keywords: alloy, engineering, memory, memory metal, metal, new materials, new materials technology, smart material, thermoplastic alloy

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