Shape Memory AlloysShape Memory AlloysNickel TitaniumNickel Titanium

Shape Memory AlloysShape Memory Alloys

Metals that remember their original Metals that remember their original shapeshape

First observed by Chang and Read in First observed by Chang and Read in 19321932

Shape memory effect observed in 1951Shape memory effect observed in 1951

NiTi discovered by William J. Buehler in NiTi discovered by William J. Buehler in 19611961

Nickel TitaniumNickel Titanium

Discovered at Naval Discovered at Naval Ordnance LaboratoryOrdnance Laboratory

Most common type of Most common type of shape memory alloyshape memory alloy

Two solid phasesTwo solid phases Martensite phaseMartensite phase Austensite phaseAustensite phase

Current ApplicationsCurrent Applications

MedicalMedical TweezersTweezers Orthodontic wireOrthodontic wire Eye glass framesEye glass frames

SafetySafety Anti-scalding Anti-scalding

devices devices fire-sprinklers fire-sprinklers

Miscellaneous Miscellaneous AppliancesAppliances ClothingClothing StructuresStructures MicromanipulatoMicromanipulato

rsrs Robotic Robotic

actuators actuators

Future ApplicationsFuture Applications

Engines in cars and airplanesEngines in cars and airplanes

Car framesCar frames

Engine coolingEngine cooling

CarburetorCarburetor

Engine lubrication controlsEngine lubrication controls