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Shape Memory Alloys Nickel Titanium

Shape Memory Alloys Nickel Titanium

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Shape Memory Alloys Nickel Titanium

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  1. Shape Memory AlloysNickel Titanium

  2. Shape Memory Alloys • Metals that remember their original shape • First observed by Chang and Read in 1932 • Shape memory effect observed in 1951 • NiTi discovered by William J. Buehler in 1961

  3. Nickel Titanium • Discovered at Naval Ordnance Laboratory • Most common type of shape memory alloy • Two solid phases • Martensite phase • Austensite phase

  4. Medical Tweezers Orthodontic wire Eye glass frames Safety Anti-scalding devices fire-sprinklers Miscellaneous Appliances Clothing Structures Micromanipulators Robotic actuators Current Applications

  5. Future Applications • Engines in cars and airplanes • Car frames • Engine cooling • Carburetor • Engine lubrication controls