Shape memory characteristics of Ti–22Nb–(2–8)Zr(at.%) biomedical alloys

Kim, J.I.; Kim, H.Y.; Inamura, Tomonari; Hosoda, Hideki; Miyazaki, S.

doi:10.1016/j.msea.2005.05.050

Cited by 333 publications

(152 citation statements)

References 12 publications

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“…In Ti-Nb binary alloys, superelastic behavior was observed at room temperature when the Nb content is 26$27 at% Nb. 1) The superelasticity has been also reported in ternary alloys such as Ti-Nb-Sn, 2) Ti-Nb-Zr, 3) Ti-Nb-Ta, 4) Ti-Nb-Al, 5) Ti-Nb-Pt 6) and Ti-Nb-O. 7) In addition, it has been also reported that the superelasticity was observed in Ti-Mobased alloys such as Ti-Mo-Sn, 8) Ti-Mo-Sc 9) and Ti-MoGa.…”

Section: Introductionmentioning

confidence: 90%

“…This has led to the development of Ni-free -Ti base shape memory alloys which consist of only non-toxic elements. [1][2][3][4][5][6][7][8][9][10][11][12] In -Ti alloys, superelasticity is associated with a stress induced martensitic transformation from the phase (bcc) to 00 martensite phase (orthorhombic) by loading and its reverse transformation by unloading. The control of the martensitic transformation temperatures by the adjustment of the amount of -stabilizer elements such as Nb, Mo and Ta is necessary to obtain the superelasticity in Ti-base alloys.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Nitrogen Addition on Superelasticity of Ti-Zr-Nb Alloys

田原正樹¹,

熙榮²,

稲邑朋也³

et al. 2008

J. Japan Inst. Metals

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Recently, the Ti-Zr-Nb alloys have been developed as Ni-free shape memory and superelastic alloys. In this study, the effects of Nb and nitrogen (N) contents on martensitic transformation behavior, shape memory effect and superelasticity in Ti-18Zr-(12$16)Nb-(0$1:0)N (at%) alloys are investigated using loading and unloading tensile tests, optical microscopy and X-ray diffractometry. The shape memory effect is observed in Ti-18Zr-(12$13)Nb and Ti-18Zr-12Nb-0.5N alloys at room temperature. The superelastic behavior appears by the increase of Nb or N content. The Ti-18Zr-(14$15)Nb, Ti-18Zr-(13$14)Nb-0.5N and Ti-18Zr-(12$14)Nb-1.0N alloys exhibit the superelasticity at room temperature. The martensitic transformation start temperature decreases by 75 K with 1 at% increase of N content for the Ti-18Zr-13Nb alloy. The critical stress for slip deformation and the stress for inducing the martensitic transformation increase with increasing N content. The superelastic recovery strain is also increased by adding N. The maximum recovery strain of 5.0% is obtained in the Ti-18Zr-14Nb-0.5N alloy.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Addition on Superelasticity of Ti-Zr-Nb Alloys

田原正樹¹,

熙榮²,

稲邑朋也³

et al. 2008

J. Japan Inst. Metals

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“…By cooling the Ti-Nb-Zr samples that were solubilized into the β region one could get either the martensitic transformation to hexagonal α' or the orthorhombic α'' phases, the latter being the one associated with the shape memory properties [30,31]. Figure 6 shows the DSC scan of a sample detached from the surface of the as-cast Ti 74 Nb 22 Zr 4 sample.…”

Section: Figure 5 X-ray Diffraction Data or The As-cast Ti-nb-zr Sammentioning

confidence: 99%

Development of Ti-Nb-Zr shape memory alloys

Chilnicean

Sprâncenatu

Zhao

et al. 2017

AIP Conference Proceedings

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Abstract. The molecular orbital method was used to identify Ni-free shape memory alloys in the Ti-Nb-Zr system. The alloys were manufactured via the arc melting technique, in Ar atmosphere and subsequently solution annealed with quenching in water. The corresponding microstructure was analyzed by X-ray diffraction and scanning electron microscopy to show the formation of martensite. A chart detailing the sequence of transformation was drawn based on calorimetric measurements and structural analysis.

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“…A number of ¢-Ti SMAs have been developed such as TiNb base alloys (e.g. Ti-Nb, 5) TiNb Al, 6) Ti-Nb-Zr, 7) TiNbTaZr 8) and Ti-Nb-Mo 9) ), Ti-Mo base alloys (e.g. Ti-Mo-Al, 10) Ti-Mo-Sn 11) and Ti-Mo-SnZr 12) ) and Ti-Ta base alloys (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy

et al. 2015

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Effect of annealing temperature on microstructure and superelasticity of Ti-4Au-5Cr-8Zr (mol%) was investigated. Only ¢ phase was observed in the specimen annealed at 1173 K, whereas the precipitation of Ti 3 Au, Zr 33 Ti 40 Au 27 (Laves phase) and ¡ phase occurred in the specimens annealed below 1073 K. Superelasticity was clearly observed in the specimens annealed at 1073 K and 1173 K, though it was absent in the specimens annealed at 873 K and 973 K. The maximum superelastic recovery strain was increased by the precipitation of Ti 3 Au in the specimen annealed at 1073 K. This is due to the increase in the critical stress for slip by the precipitation strengthening effect of Ti 3 Au.

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Shape memory characteristics of Ti–22Nb–(2–8)Zr(at.%) biomedical alloys

Cited by 333 publications

References 12 publications

Effect of Nitrogen Addition on Superelasticity of Ti-Zr-Nb Alloys

Effect of Nitrogen Addition on Superelasticity of Ti-Zr-Nb Alloys

Development of Ti-Nb-Zr shape memory alloys

Effect of Annealing Temperature on Microstructure and Superelastic Properties of Ti-Au-Cr-Zr Alloy

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