CuZnAl形状记忆合金母相时效过程中的组织变化Transformation Behavior of CuZnAl Shape Memory Alloy during Aging in Parent Phase
李周,汪明朴,郭明星
摘要(Abstract)：
利用 ρ T曲线测量、X射线衍射、透射电镜观察等方法研究了Cu 19Zn 13Al (at% )合金母相时效过程中组织的变化规律。结果表明 :Cu 19Zn 13Al合金母相时效时 ,β1 母相发生了贝氏体转变 ,继续延长时效时间 ,贝氏体向α相转变 ;或者 ,由 β1 母相直接转变为块 (棒 )状的α相。Cu 19Zn 13Al (at% )合金母相时效时 ,MS 点先升高后下降 ,且分解过程进行较快 ,30 0min后分解过程基本上完成 ,合金不再发生马氏体相变。
关键词(KeyWords)： 形状记忆合金;母相时效;贝氏体;α相
基金项目(Foundation): 国家自然科学基金 (50 0 71 0 69)
作者(Author): 李周,汪明朴,郭明星
参考文献(References)：
- 1 KayawaN ,ZengtinR ,AdiguzelO .InfluenceofagingontransformationcharacteristicsinshapememoryCuZnAlalloys[J].MetalMaterTransA ,2000,31A :349～354.
- 2 李春明,方鸿生,王家军.CuZnAl合金初生态贝氏体的台阶普遍性[J].金属学报,1995,31(9):381～385.
- 3 KomatsuSY .ChangeinmartensitictransformationtransformationtemperatureofCubasedshapememoryalloyswithheattreatments[J].TransJIM ,1987,51(7):599～607.
- 4 BubleyTR ,NovalYN ,TirtovPV .β1→γ’transformationinCuAlMnalloysafterlow temperatureaging[J].ScriptaMetar,1999,41(6):637～641.
- 5 PonsJ,PortierR .Accommodationofγ phaseprecipitatesinCuZnAlshapememoryalloysstudiedbyhighresolutionelectronmicroscopy[J].ActaMaterialia,1997,45(5):2109～2120.
- 6 CingolaniE ,VanHumbeeckJ ,AhlersM .Stabilizationandtwo wayshapememoryeffectinCuAlNisinglecrystals[J].MetalMaterTransA ,1999,30A :493～499.
- 7 ErbstoeszerB ,ArmstrongB ,TayaM ,etal.StabilizationoftheshapememoryeffectinNiTi:Anexperimentalinvestigation[J].ScriptaMatell,2000,42(12):1145～1150.
- 8 KuwanoN ,WaymanCM .SomeeffectofparentphaseagingonthemartensitetransformationinaCuAlNishapememoryalloy[J].MetalTransA ,1984,15A :621～626.
- 9 TakezawaK ,SatoS .FormationmechanismofαrodandαbplateinCuZnandCuZnAlalloys[J].MaterialsTransactionsJIM ,1991,32(8):766～773.
- 10 TadakiT ,CaiJQ ,ShimizuK .AnalyticalelectronmicroscopestudyonthebainitectransformationinβphaseCuZnAualloys[J].MaterialsTransactionsJIM ,1991,32(8):757～765.
- 11 LiZ ,WangMP .CrystalstructureandthermalstabilityofthemartensiteinCu24Al3MnalloyTrans[J].NonferrousMetSocChina,2002,12(1):6～10.
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