Tuning the texture characteristics and superelastic behaviors of Ti–Zr–Nb–Sn shape memory alloys by varying Nb content

Li, Shuanglei; Lim, Jintaek; Rehman, Izaz Ur; Lee, Won-Tae; Kim, Jung Gi; Oh, Jeong Seok; Lee, Taekyung; Nam, Tae-Hyun

doi:10.1016/j.msea.2022.143243

Cited by 15 publications

(3 citation statements)

References 36 publications

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“…Li S. et al reported that major α martensite and minor β martensite are formed in Ti-20Zr-8Nb-3Sn sample. When the Nb content increases above 10 at%, only the β phase is observed [16]. Fu J. et al [17] developed a Ti-18Zr-4.5 Nb-3Sn-2Mo alloy by replacing Nb with Mo and confirmed that this increases the tensile strength, thereby increasing the critical stress.…”

Section: Introductionmentioning

confidence: 97%

Study of titanium alloy Ti–Al–Zr–Nb–V during heating under deformation and its phase transformation features

KENZHEGULOV,

MAMAEVA,

PANICHKIN

et al. 2024

J Met Mater Miner

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An alloy based on Ti–Al–Zr–Nb–V was prepared and its deformation behavior at elevated temperatures was studied. The microstructure and phase of the alloys were characterized by optical microscopy, scanning electron microscopy, thermal analysis, and mechanical testing. The results showed that the Ti–Al–Zr–Nb–V alloy, when stretched, exhibits a superplasticity effect in the range of 975℃ to 1100℃, with an elongation of up to 400%. It was found that superplasticity develops in the temperature region of the α+β→β transition and is accompanied by a change in grain size and redistribution of alloying elements among phases.

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Section: Introductionmentioning

confidence: 97%

Study of titanium alloy Ti–Al–Zr–Nb–V during heating under deformation and its phase transformation features

KENZHEGULOV,

MAMAEVA,

PANICHKIN

et al. 2024

J Met Mater Miner

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“…Generally, Ti alloys are classified into three types of alloys according to their phase constituents and microstructures, i.e., a-type Ti alloys, (a+β)-type Ti alloys and β-type Ti alloys. It has been well documented that the additions of some biocompatible alloy elements, such as Nb [2], Mo [3], Ta [4], Zr [5], Cu [6], Fe [7] and Sn [8,9], etc., can effectively promote the β phase stability of Ti alloys, and metastable β titanium alloys with a BCC structure can be obtained at room temperature [10]. Compared to the conventional titanium alloys, β titanium alloys not only have good biocompatibility, but also have an extremely low elastic modulus and high strength.…”

Section: Introductionmentioning

confidence: 99%

Phase Field Study on the Spinodal Decomposition of β Phase in Zr–Nb-Ti Alloys

et al. 2023

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In this study, a phase field method based on the Cahn–Hilliard equation was used to simulate the spinodal decomposition in Zr-Nb-Ti alloys, and the effects of Ti concentration and aging temperature (800–925 K) on the spinodal structure of the alloys for 1000 min were investigated. It was found that the spinodal decomposition occurred in the Zr-40Nb-20Ti, Zr-40Nb-25Ti and Zr-33Nb-29Ti alloys aged at 900 K with the formation of the Ti-rich phases and Ti-poor phases. The spinodal phases in the Zr-40Nb-20Ti, Zr-40Nb-25Ti and Zr-33Nb-29Ti alloys aged at 900 K were in an interconnected non-oriented maze-like shape, a discrete droplet-like shape and a clustering sheet-like shape in the early aging period, respectively. With the increase in Ti concentration of the Zr-Nb-Ti alloys, the wavelength of the concentration modulation increased but amplitude decreased. The aging temperature had an important influence on the spinodal decomposition of the Zr-Nb-Ti alloy system. For the Zr-40Nb-25Ti alloy, with the increase in the aging temperature, the shape of the rich Zr phase changed from an interconnected non-oriented maze-like shape to a discrete droplet-like shape, and the wavelength of the concentration modulate increased quickly to a stable value, but the amplitude decreased in the alloy. As the aging temperature increased to 925 K, the spinodal decomposition did not occur in the Zr-40Nb-25Ti alloy.

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“…Particularly, TiNb-based SMAs have attracted great attention because of their excellent shape memory effect and superelasticity. There has been broad investigation on TiNb-based alloys, such as Ti−Nb−Al [4][5][6], Ti−Nb−Ta [7][8][9][10][11], Ti−Nb−Zr [12][13][14], Ti−Nb−Sn [15][16][17][18], Ti−Nb−Zr−Ta [19,20], and Ti−Nb−Zr−Sn [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Alloying Effect on Transformation Strain and Martensitic Transformation Temperature of Ti-Based Alloys from Ab Initio Calculations

Fang,

Xu,

Zhang

et al. 2023

Materials

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The accurate prediction of alloying effects on the martensitic transition temperature (Ms) is still a big challenge. To investigate the composition-dependent lattice deformation strain and the Ms upon the β to α″ phase transition, we calculate the total energies and transformation strains for two selected Ti−Nb−Al and Ti−Nb−Ta ternaries employing a first-principles method. The adopted approach accurately estimates the alloying effect on lattice strain and the Ms by comparing it with the available measurements. The largest elongation and the largest compression due to the lattice strain occur along ±[011]β and ±[100]β, respectively. As compared to the overestimation of the Ms from existing empirical relationships, an improved Ms estimation can be realized using our proposed empirical relation by associating the measured Ms with the energy difference between the β and α″ phases. There is a satisfactory agreement between the predicted and measured Ms, implying that the proposed empirical relation could accurately describe the coupling alloying effect on Ms. Both Al and Ta strongly decrease the Ms, which is in line with the available observations. A correlation between the Ms and elastic modulus, C44, is found, implying that elastic moduli may be regarded as a prefactor of composition-dependent Ms. This work sheds deep light on precisely and directly predicting the Ms of Ti-containing alloys from the first-principles method.

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Tuning the texture characteristics and superelastic behaviors of Ti–Zr–Nb–Sn shape memory alloys by varying Nb content

Cited by 15 publications

References 36 publications

Study of titanium alloy Ti–Al–Zr–Nb–V during heating under deformation and its phase transformation features

Study of titanium alloy Ti–Al–Zr–Nb–V during heating under deformation and its phase transformation features

Phase Field Study on the Spinodal Decomposition of β Phase in Zr–Nb-Ti Alloys

Alloying Effect on Transformation Strain and Martensitic Transformation Temperature of Ti-Based Alloys from Ab Initio Calculations

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