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Shape Memory AlloysShape Memory AlloysNickel TitaniumNickel Titanium
ByByRichard Cordero IIRichard Cordero II
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Shape Memory AlloysShape Memory AlloysMetals 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
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Nickel TitaniumNickel TitaniumDiscovered 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
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Current ApplicationsCurrent ApplicationsMedicalMedical TweezersTweezers Orthodontic wireOrthodontic wire Eye glass framesEye glass framesSafetySafety Anti-scalding Anti-scalding
devices devices fire-sprinklers fire-sprinklers
Miscellaneous Miscellaneous AppliancesAppliances ClothingClothing StructuresStructures MicromanipulatoMicromanipulato
rsrs Robotic Robotic
actuators actuators
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Future ApplicationsFuture ApplicationsEngines in cars and airplanesEngines in cars and airplanesCar framesCar framesEngine coolingEngine coolingCarburetorCarburetorEngine lubrication controlsEngine lubrication controls
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ReferencesReferencesShape Memory Alloys; Lin, Richard Shape Memory Alloys; Lin, Richard http://www.stanford.edu/~richlin1/sma/sma.html#APPLIChttp://www.stanford.edu/~richlin1/sma/sma.html#APPLICATIONSATIONS
Johnson Matthey; Johnson Matthey; http://www.sma-inc.com/html/nitinol_components.htmlhttp://www.sma-inc.com/html/nitinol_components.html
Nickel – Titanium Shape Memory Alloys; Nickel – Titanium Shape Memory Alloys; http://www.azom.com/details.asp?ArticleID=1365http://www.azom.com/details.asp?ArticleID=1365
Memory Metal; Memory Metal; http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA2/MAIN/Mhttp://jchemed.chem.wisc.edu/JCESoft/CCA/CCA2/MAIN/MEMORYM/CD2R1.HTMEMORYM/CD2R1.HTM
Shape Memory Alloys; Shape Memory Alloys; http://www.designinsite.dk/htmsider/m1310.htm http://www.designinsite.dk/htmsider/m1310.htm