欢迎登录材料期刊网

材料期刊网

高级检索

利用x射线衍射仪(XRD)、金相显微镜(OM)、维氏硬度计和万能电子拉伸试验机,研究了Ni<,47>Ti<,44>Nb<,9>形状记忆合金冷轧板材中的B2相沿轧向(RD)和横向(TD)的织构,以及热处理对冷轧板材硬度、显微组织、拉伸性能和恢复应变的影响.结果表明:冷轧板材的织构主要由较强的{111}丝(即γ-丝)和较弱的{332}丝组成.沿轧向,强组分向γ-丝中的{111}<110>靠近,而沿横向,强组分靠近γ-丝中的{111}<112>;随淬火温度提高,冷轧板材的硬度缓慢下降,超过500℃后,硬度急剧下降,到700℃以后硬度基本不变;冷轧板材在550℃发生明显再结晶,700℃处理后再结晶晶粒发生长大;随淬火温度提高,沿轧向(RD)和横向(TD)的应力诱发马氏体相变临界应力(σ<,M>)和可恢复应变(ε<,r>)降低.低于550℃淬火板材,沿轧向的临界应力σ<,M>高于沿横向方向的,而沿横向的可恢复应变ε<,r>较高,高于550℃淬火,沿横向的临界应力σ<,M>提高,可恢复应变ε<,r>沿轧向和横向的数值接近.

参考文献

[1] Yuan WQ;Yi S .Pseudo-elastic strain estimation of textured TiNi shape memory alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):439-448.
[2] H. INOUE;N. MIWA;N. INAKAZU .TEXTURE AND SHAPE MEMORY STRAIN IN TiNi ALLOY SHEETS[J].Acta materialia,1996(12):4825-4834.
[3] Miyazaki S.;Kitamura K.;Khantachawana A.;Hosoda H.;No VH. .Texture of Ti-Ni rolled thin plates and sputter-deposited thin films[J].International Journal of Plasticity,2000(10/11):1135-1154.
[4] S. Daly;G. Ravichandran;K. Bhattacharya .Stress-induced martensitic phase transformation in thin sheets of Nitinol[J].Acta materialia,2007(10):3593-3600.
[5] Mulder Jan H;Thoma Paul E;Beyer Jeno .Anisotropy of the shape memory effect in tension of cold-rolled 50.8Ti49 2Ni (at %) sheet[J].Zeitschrift fur Metallkunde,1993,84(07):501.
[6] Gall K.;McDowell DL.;Sehitoglu H.;Chumlyakov YI.;Lim TJ. .The role of intergranular constraint on the stress-induced martensitic transformation in textured polycrystalline NiTi[J].International Journal of Plasticity,2000(10/11):1189-1214.
[7] Thamburaja P;Anand L .Polycrystalline shape-memory marterials:effect of crystallographic texture[J].Journal of the Mechanics and Physics of Solids,2001,49(04):709.
[8] Liu Y.;Van Humbeeck J.;Delaey L.;Xie ZL. .Effect of texture orientation on the martensite deformation of NiTi shape memory alloy sheet[J].Acta materialia,1999(2):645-660.
[9] S. H. Chang;S. K. Wu .Textures in cold-rolled and annealed Ti_(50)Ni_(50) shape memory alloy[J].Scripta materialia,2004(7):937-941.
[10] Gao Shan;Yi Sung .Experimental study on the anisotropic behavior of textured NiTi pseudoelastic shape memory alloys[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2003,A362(1-2):107.
[11] 杨冠军,谢丽英,胡文英.再结晶退火对Ni47Ti44Nb9合金冷轧板相组成及板材织构的影响[J].稀有金属材料与工程,1994(03):13-16.
[12] Toth L S;Jonas J J;Daniel D;Ray R K .Deveolpment of ferrite rolling textures in low-and extra low-carbon steels[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1990,A21(11):2985.
[13] Raphanel J L;Von Houtte P .Simulation of the rolling textures of BCC metals by means of the related Taylor theory[J].Acta Metallurgica,1985,33(08):1481.
[14] Von Schlippenbach U;Emren F;Lucke K .Investigation of the development of the cold rolling texture in deep drawing steels by ODF analysis[J].Acta Metallurgica,1986,34(07):1289.
[15] K. GALL;H. SEHITOGLU;Y. I. CHUMLYAKOV .TENSION-COMPRESSION ASYMMETRY OF THE STRESS- STRAIN RESPONSE IN AGED SINGLE CRYSTAL AND POLYCRYSTALLINE NiTi[J].Acta materialia,1999(4):1203-1217.
[16] Sehitoglu H.;Karaman I. .COMPRESSIVE RESPONSE OF NiTi SINGLE CRYSTALS[J].Acta materialia,2000(13):3311-3326.
[17] H. Zhao;S. C. Rama;G. C. Barber;Z. Wang;X. Wang .Experimental study of deep drawability of hot rolled IF steel[J].Journal of Materials Processing Technology,2002(1/3):73-79.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%