Ti-Ni形状记忆合金DSC曲线的特征

Vol.33No.4(1997),21.TiNiDSC’(725003)iTiNDSC。,iTiNDSC6。DSC。,iTiN7.iN,,,。iTiNDSCCHARCTERISTICSOFDSCCURVESINTiNiSHAPEMEMORYALLOYSHeZhirongZhangYonghongXieNiansuo(ShaanxiInstituteofTeehonlogy)AbstractTheehareteristiesofDSC(DifferentialSeanningCalorimetry)eurvesinagedTiNishapememo-ryalloyshavebeenstudiedsystematieally.Theresultsareasfollows.DSCeurvesinTiNialloyseanbeelassifiedinto6kinds.ComplieatedDSCeurveseanbeanalyzedwithineompleteeyelemethod.Aeeordingtoeompositionandagingproeess,7kindsofreversiblephasetransformationeantakeplaeeinTiNialloys.Nieontentagingtransfor-mationtablewasestablished.UsingthistablethetypeoftransformationeanbepredietedwhenNieontentandag-ingproeess15known.ontheotherhand,whendesiredtransformationtype15given,alloyandagingproeesseanalsobedesignedwiththistable.KeywordsTiNialloyPhasetransformationShapememoryeffeetDSCeurvesDSC()。,、l[,2〕。TiNi。、(M)、R2[,3〕。iN,R、M。iTiN。iTNiDSC。〔4`〕,,iTNi。6。DSC。973Khl,,673K0.sh,lh,10h,100h773Klh,10h,100h,。ShimaduzDsc50。A12O:。、123~423K()。、loK/min。21”.9%99.7%,20iTNi(at%Ni=33.3,40.0,45.0,48.0,48.5,49.0,49.5,50.0,50.5,51.0,51.5,52.0,53.0,55.0,56.0,58.0,60.0,65.0,70.0,75.0)。,1TiNi773Klh、DSC。,iTiNDSCiNa(t%),:(l)Ti33.3%NiTi75.00%NiDSC,、lj[。(2),iTiN,+Ni(50%),673KiN(50%)DSC,773KNiDSC。2.1DSCR(2~4K),M(20~95JZK14Vol.33No.4(1799)Tixat%iN793Klh773KlhWQTi65.0atiN379Klh773KlhWQ11。\0tJ000255..055.04`,!j,M:R,::。(”)、aRA,AITi65.,73K01h300at%Ni·773K1h0WQM,.1·\,、,.Q`J`、`、、.2、。Oó、.、.ó.\lll、l\]]]VVV{{{{{}}-】IAIII.......050.5052.0055.0065.0075.0200250300350400T/K1DSClooK),DSCR、M[,,`6〕。2DSC。Za(1)Ti65.0%Ni773Klh、DSC。,R、M,、M:,A,、A,4j[。、,(2)、(3)、,(R)(M),。,RRA,MlA:。(1)(2)(3),(z)A,、AZM,、MZ。R,(B:)R,R,M~A(BZ)。Zb773K1h0DSC。(2),(1),R。(3),(1)MlAl。(4)(5)A:,,M:M:,Ml,Al。,(l)Al、A:Ml、M:。2。(l)Ti53.0%Ni773K100h、DSC,、,(2)(3)(4)。(1)M、A。,R250300350Ti53.0atNi973Klh773K100hWQD4)2)3)`、`.、`、.`,iùùùù、;\AA,AR、、、、,Fó、、,;M.t_l.\250300350T/K2DSC,。.22DSC,〔`“〕,iTNi367。a3,M,M。AM,A#M。,iN673KM,DSCR。RAR,RAR。,3bA~R~MM~A,A~RR~M,M~A。3。A#RM。a〕,、A~R,MM~R~A。d3Vol.33No.4(9917)7!{}AV}AV}、y.--11·\T/K3T/KT/KSCDA#R#(Ml+MZ),MR~M:RM:。3eA~R~(M:+MZ)(M,+MZ)~A,MI、M:A。3fA~R~(M:+MZ)(Ml+M:)~(Al+AZ),M,、M:Al、A:。。,;,。2.3Nit、、Ni4。4。,、,。,Ni%~40.0~70.0;40.0~50.0673K;40.0~50.5773K55.0~70.0773KIOh0,A#M。50.5A#M,673K0.shA~R~M,lh--A~B~(M:+MZ),loh、looh}A~R~M;773K--AM。,,,。R#RA,4,50.5~70.0673K0.5hl。A~R~M,—{,。3(1)iTiNDSC6。DSC。(2)iN,iTiN7。(3)Ni,,,。,,1996;52(4):351,,..:,1993:24,26,58Miya:aki,S,NomraK,.Proe.oftheFirstInter.Conf.onShaPeMemoryandSuPerelastieTeehnologies,PaeifieGrove.USA:1994,19Ni(at%)973Klh、,.’…·’53·0155·0156·0158·0160·0165·0170·o·”·’::·’,0,sh//RMA673KIlhRMIMZARA1h010h0RMA/773K10h10h0AARMIM:RAARMIMZARMM:AIA:M/A:1.,.2M(M:M:),AM,RR,RAR4Ni(28)Vol.33No.4(1997)()()1025305080100200X6.84147.76606.67766.58866.51046.74906.9762S2.12481.55301.09911.10151.39641.23151.51390.70040.31060.20700.15580.15260.12320.17001.5604O,64080.39330.30530.29910.24140.20985.28107.03526.28436.28336.21136.23766.76648.40188.31687.07096.89396.80956.72047.28607.22.8088.3485.8904.6344.5943.7263.007amX(5),:,。、,2.5、,,1.96XI.2%、,:,=--.-“=d.1。U.1d3,,。。,,n200,1%。。,,5,2。,,。,,,。,,。(1)、(2)。:0.95,Z1.96,:1.2%,0.3%,:553。,。,。,0.5%,35。4(l),。(2)。、,Z·s、,,1.96X1.2%、,n-,“~bl.“U.J0,..,1992,..,1985,,..,1992,,..,1989n)62。,0.1%,:19960820(23)4FavierD,LiuY,MeeormikPG.cSriPtametallmater,1993;28:6695,.,1996;(20):76TodorokiT,TamuraH.Trans.JIM.,1987;28(2):837TadakiT,NakataY,ShimizuK.1987;28(11):883Trans.JIM.,8〔].,2985;49(6):439:19960812