Influence of applying external stress during aging on martensitic transformation and the superelastic behavior of a Ni-rich NiTi alloy

被引：23
作者：
Abbasi-Chianeh, V. [1 ]
Khalil-Allafi, J. [1 ]
机构：
[1] Sahand Univ Technol, Fac Mat Engn, Adv Mat Res Ctr, Tabriz, Iran
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 15期
关键词：
Multi step martensitic transformation; NiTi shape memory alloys; Ni4Ti3; precipitates; Single variant precipitation; Superelasticity; SHAPE-MEMORY ALLOYS; COHERENT TI11NI14 PRECIPITATE; CONCENTRATION GRADIENTS; SINGLE-CRYSTALS; PHASE-ANALYSIS; MICROSTRUCTURE; GROWTH;
D O I：
10.1016/j.msea.2011.03.029
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Superelastic properties and martensitic transition temperatures of Ni50.9Ti shape memory wires were studied after aging under different applied stresses at 450 degrees C for 45 min. The results indicate that applying external stresses during aging of Ni50.9Ti shape memory wires changes the strain value and stress level of plateaus related to stress induced martensitic transformation. Furthermore, martensitic transformation sequences change after applying external stresses but transformation temperatures measured with DSC remain constant in samples aged under stresses up to 120 MPa. Applying stress of 60 MPa during aging enhances the superelastic properties by increasing the strain of plateaus during loading and unloading cycles. Applying stresses more than 60 MPa, decreases the strain of the plateau during unloading. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：5060 / 5065
页数：6
相关论文
共 37 条
  • [1] Influence of aging atmosphere on the superelastic behavior of Ni50.9-Ti shape memory thin wires
    Abbasi-Chianeh, V.
    Khalil-Allafi, J.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (26): : 6963 - 6967
  • [2] The mechanism of multistage martensitic transformations in aged Ni-rich NiTi shape memory alloys
    Allafi, JK
    Ren, X
    Eggeler, G
    [J]. ACTA MATERIALIA, 2002, 50 (04) : 793 - 803
  • [3] Bataillard L, 1998, PHILOS MAG A, V78, P327, DOI 10.1080/01418619808241907
  • [4] Precipitation of Ni4Ti3-variants in a polycrystalline Ni-rich NiTi shape memory alloy
    Bojda, O
    Eggeler, G
    Dlouhy, A
    [J]. SCRIPTA MATERIALIA, 2005, 53 (01) : 99 - 104
  • [5] Multiple-step martensitic transformations in Ni-rich NiTi shape memory alloys
    Carroll, MC
    Somsen, C
    Eggeler, G
    [J]. SCRIPTA MATERIALIA, 2004, 50 (02) : 187 - 192
  • [6] Age-induced four-stage transformation in Ni-rich NiTi shape memory alloys
    Chiang, L. J.
    Li, C. H.
    Hsu, Y. F.
    Wang, W. H.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 458 (1-2) : 231 - 237
  • [7] Multiple-step martensitic transformations in Ni-rich NiTi alloys -: an in-situ transmission electron microscopy investigation
    Dlouhy, A
    Khalil-Allafi, J
    Eggeler, G
    [J]. PHILOSOPHICAL MAGAZINE, 2003, 83 (03) : 339 - 363
  • [8] EGGELER G, 2002, INT J MAT RES ADV TE, V93, P654
  • [9] Origin of abnormal multi-stage martensitic transformation behavior in aged Ni-rich Ti-Ni shape memory alloys
    Fan, GL
    Chen, W
    Yang, S
    Zhu, JH
    Ren, XB
    Otsuka, K
    [J]. ACTA MATERIALIA, 2004, 52 (14) : 4351 - 4362
  • [10] Influence of thermomechanical processing on the superelastic properties of a Ni-rich Nitinol shape memory alloy
    Favier, D.
    Liu, Y.
    Orgeas, L.
    Sandel, A.
    Debove, L.
    Comte-Gaz, P.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 429 (1-2): : 130 - 136
1234