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1、1Theshapememoryanditsresearchinapplication2Abstract:Thisarticledescribesthebasicprinciplesoftheshapememoryeffectofshapememorymaterialandthisiscloselyrelatedtothemartensitictransformation.Itdiscussestheessenceandtypesofshapememorymaterials,itintroduce
2、sseveralcommonperformanceandcharacteristicsofshapememorymaterialsanditsapplicationinallfields.Inthispaperenumeratesmanyillustrationsinapplicationofshapememorymaterialsbothathomeandabroad.Keywords:shapememoryeffects;shapememoryalloy;3Contents1Introduc
3、tion2Development34Preparation5ApplicationsResearchandmethods4MetalshavememoryabilityWith“memory”ofalloysaremadeintoflowers,birds,fish,insectandallsortsofmodeling,whichcanappearflowers,birdwings,fishputtailaslongasinacertaintemperatureofthewater.Metal
4、flowermadefromCuZnAlmemoryalloyslice,Withhotwaterorhotairassource.Itsopeningtempera-tureis65℃to85℃,closuretemperatureisroomtempe-rature.5IntroductionConceptShapememoryeffectsisthespecialperformanceofreversible（可逆的）thermoelastic(热性的）martensiticphase(马
5、氏体相）trans-formation.Forgeneralmetal,strainmoreThan0.2-0.5%inelasticzone(弹性区域),theshapecan’trecoverper-manentlyafteruploading.Thisde-formationiscalledplasticdeforma-tion.Forshapememoryalloy,despitethestrainismorethanelasticlimitdozenpercentage,themeta
6、lwouldfullyrestoretotheshapeofthede-formationjustlikerememberthepaststateaslongasremoveextern-alstressorheatit.originalshapestraightenrestoretooriginalshapewhenheated6ClassificationThereismorethan10kindsofbasicalloysystem,whichpresenttheshapememoryef
7、fectofthealloy.Ifthemutualcombinationofalloyoraddtheappropriateelementsofthealloyareincluded,therearemorethan100.However,onlyTialloy,Cualloy,andtheFebasealloywereputintopractice.TiNialloyCu-basedshapememoryalloyFe-basedshapememoryalloy7TiNialloyTiNia
8、lloyisthebestmemoryperformancealloymaterialsandstudymostcomprehensiveofshapememoryalloy.TiNialloywithhighstrength,plasticity,goodcorrosionresistance(耐腐蚀性）,goodstability,excellentbiocompatibility（生物相容性).theshapememoryalloycannotbereplacedbyotherinthem
