Experimentally validated constitutive model for NiTi-based shape memory alloys featuring intermediate R-phase transformation: A case study of Ni48Ti49Fe3

Frost, Miroslav; Jury, A.; Heller, Luděk; Sedlák, Petr

doi:10.1016/j.matdes.2021.109593

Cited by 16 publications

(8 citation statements)

References 62 publications

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“… Comparison of work output as a function of actuation response temperature upon cooling (i.e.,

M_{normals}

) for the

{Ti}_{49.2} {Ni}_{50.8 - x} {Co}_{x}

alloys with different Co contents and other reported shape‐memory alloys, including Ti–Ni binary, [ 13,17,18,43–45 ] Ti–Ni–Cu based, [ 46,47 ] Ti–Ni–Pd based, [ 48,49 ] Ti–Ni–Hf based, [ 50–53 ] Ti–Ni–Fe, [ 54,55 ] and Cu–Al–Mn [ 11 ] alloys.…”

Section: Resultsmentioning

confidence: 99%

“…[29,31] The distinct deformation behaviors among Co1, Co4, and Co6 are likely due to their different microstructures, which are shown in Section 2.5. [13,17,18,[43][44][45] Ti-Ni-Cu based, [46,47] Ti-Ni-Pd based, [48,49] Ti-Ni-Hf based, [50][51][52][53] Ti-Ni-Fe, [54,55] and Cu-Al-Mn [11] alloys.…”

Section: In Situ Digital Image Correlation Observation Of Strain Resp...mentioning

confidence: 99%

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Nanostructured Ti–Ni–Co Alloys Showing Shape‐Memory Actuation of Large Work Output at Low Temperature

Dang,

Zhang,

Zhou

et al. 2023

Adv Eng Mater

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In the present study, by combining the effect of point defect doping and nanostructure, we developed low‐temperature Ti49.2Ni50.8−xCox shape memory alloys showing good actuation property. The doping of Co into Ti‐Ni host alloy suppresses the martensitic transformation to lower temperature. By post‐deformation annealing, the partially recrystallized state containing dense dislocations and nanoprecipitates is achieved. And this remarkably strengthens the matrix to avoid irreversible strain under large external load. A Ti49.2Ni44.8Co6 alloy thereby exhibits a recoverable actuation strain of 4.5% under biased tensile stress of 800 MPa at temperatures below −50∘C. The work output up to 36MJ/m3 outperforms most shape memory alloys, showing a promise for low‐temperature actuator applications.This article is protected by copyright. All rights reserved.

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“… Comparison of work output as a function of actuation response temperature upon cooling (i.e.,

M_{normals}

) for the

{Ti}_{49.2} {Ni}_{50.8 - x} {Co}_{x}

Section: Resultsmentioning

confidence: 99%

Section: In Situ Digital Image Correlation Observation Of Strain Resp...mentioning

confidence: 99%

Nanostructured Ti–Ni–Co Alloys Showing Shape‐Memory Actuation of Large Work Output at Low Temperature

Dang,

Zhang,

Zhou

et al. 2023

Adv Eng Mater

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show abstract

“…The proper fixation of samples in the grips affects the measurement accuracy [27,28]. Similar grips are used in other universal testing machines [18,[21][22][23]. Two types of fixing the samples are presented in figure 4.…”

Section: Preparing the Device For Operationmentioning

confidence: 99%

“…The horizontal sample allows using the microscope on a standard stand without additional brackets or consoles, opposite to vertical stationary universal tensile testing machines [16,21,26]. This sample arrangement allows maintaining the device's compactness, versatility, and portability.…”

Section: Preparing the Device For Operationmentioning

confidence: 99%

“…Devices for cyclic tensile loading of fibers contain a large number of kinematic joints and nodes, which reduce measurement accuracy, and sometimes lack digital control and data processing [18][19][20]. At the same time, there are computerized universal testing machines manufactured by Instron (USA), MTS Systems (USA), and Testex (China) [21][22][23][24][25][26][27][28]. These machines have a rigid frame with vertical guides, along which the traverse is moved by a motor.…”

Section: Introductionmentioning

confidence: 99%

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Portable universal tensile testing machine for studying mechanical properties of superelastic biomaterials

Gunther¹,

Марченко²,

Yasenchuk³

et al. 2021

Eng. Res. Express

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A portable universal tensile testing machine for single and cyclic loading of superelastic biomaterials is presented. It’s an alternative to large-sized stationary universal testing machines. The machine is designed to obtain uniaxial cyclic tension stress-strain curves of materials with a low elastic modulus, including biological tissues. Its portability allows using it in various conditions: classrooms, production laboratories, and in the field. An interface has been developed to connect it to a computer. Computer output of experimental data allows recording and displaying load-displacement curves, setting the number of cycles, limits, and rate of cyclic deformation. Several examples of testing various biomaterials are presented. The functional advantage of the device is the wide tensile testing speed range of 0.01-10 mm/s and cyclic loading, which allow capturing viscoelastic and superelastic behavior of biomaterials.

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Quantitative modeling of the variation in stress–strain response of shape memory alloys in partial phase transformed state

Reddy,

2024

Sādhanā

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Experimentally validated constitutive model for NiTi-based shape memory alloys featuring intermediate R-phase transformation: A case study of Ni48Ti49Fe3

Cited by 16 publications

References 62 publications

Nanostructured Ti–Ni–Co Alloys Showing Shape‐Memory Actuation of Large Work Output at Low Temperature

Nanostructured Ti–Ni–Co Alloys Showing Shape‐Memory Actuation of Large Work Output at Low Temperature

Portable universal tensile testing machine for studying mechanical properties of superelastic biomaterials

Quantitative modeling of the variation in stress–strain response of shape memory alloys in partial phase transformed state

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