Superelastic behavior in tension–torsion of an initially-textured Ti–Ni shape-memory alloy

Thamburaja, T Prakash G.; Anand, Lallit

doi:10.1016/s0749-6419(02)00031-1

Cited by 74 publications

(40 citation statements)

References 10 publications

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“…This NiTi alloy does not exhibit a strong, "flag-like" pseudoelastic response, as typically observed above h AF in Ni-rich NiTi alloys [12][13][14][15]28,29,[38][39][40][41][42] or cold-worked and annealed Ti-rich NiTi alloys [43]. The more idealized pseudoelastic response, with clear loading and unloading plateaus and large recoverable strains, is obtained in microstructures that suppress plastic deformation [44] yet permit stress-induced transformation.…”

Section: Pseudoelastic and Plastic Strains Above H Afmentioning

confidence: 73%

“…This formalism, proposed by Thamburaja and Anand [13], specifies no change in m t when f t satisfies the inequalities preceding Eq. (9).…”

Section: Transformation Constitutive Relationmentioning

confidence: 99%

“…Variant-level models (e.g. [12][13][14][15][16][17][18][19][20]) track the volume fraction of individual martensite variants, thereby capturing effects of texture and crystal orientation. One version includes a recursive algorithm method that adjusts interactions between competing tetradomains in order to reproduce neutron diffraction data [21].…”

Section: Introductionmentioning

confidence: 99%

“…Most do not incorporate it at all [12][13][14][15][16], including the aforementioned recursive model [21,22]. Some recent efforts have included martensite plasticity, either in J2-based [18,26] or crystal-based [17] forms.…”

Section: Introductionmentioning

confidence: 99%

“…1a as well as other data. This recent finite element (FE) approach [32] couples a crystal-based description of the evolution of martensite hpv by Thamburaja and Anand [13] with a crystal-based description of austenite plasticity based on Peirce et al [33]. Thus, it is able to assess the Patoor et al [23] formalism for hpv-hpv interaction as well as hpv-crystal plasticity interaction.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Thermal cycling and isothermal deformation response of polycrystalline NiTi: Simulations vs. experiment

et al. 2011

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A recent microstructure-based FEM model that couples crystal-based plasticity, the B2 M B19 0 phase transformation and anisotropic elasticity at the grain scale is calibrated to recent data for polycrystalline NiTi (49.9 at.% Ni). Inputs include anisotropic elastic properties, texture and differential scanning calorimetry data, as well as a subset of recent isothermal deformation and load-biased thermal cycling data. The model is assessed against additional experimental data. Several experimental trends are captured -in particular, the transformation strain during thermal cycling monotonically increases and reaches a peak with increasing bias stress. This is achieved, in part, by modifying the martensite hardening matrix proposed by Patoor et al. [Patoor E, Eberhardt A, Berveiller M. J Phys IV 1996;6:277]. Some experimental trends are underestimated -in particular, the ratcheting of macrostrain during thermal cycling. This may reflect a model limitation that transformation-plasticity coupling is captured on a coarse (grain) scale but not on a fine (martensitic plate) scale.

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Section: Pseudoelastic and Plastic Strains Above H Afmentioning

confidence: 73%

“…This formalism, proposed by Thamburaja and Anand [13], specifies no change in m t when f t satisfies the inequalities preceding Eq. (9).…”

Section: Transformation Constitutive Relationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermal cycling and isothermal deformation response of polycrystalline NiTi: Simulations vs. experiment

et al. 2011

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Understanding the Deformation and Fracture of Nitinol Endovascular Stents Using In Situ Synchrotron X‐Ray Microdiffraction

Mehta

Gong²,

Imbeni

et al. 2007

Advanced Materials

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Endovascular stents manufactured from superelastic Nitinol represent a major component in the fight against heart disease. However, accurate characterization of the stress/strain distributions, which govern the deformation and fracture behavior in such stents, is essential for their prolonged safe use in human arteries. Here we report the first direct synchrotron X‐ray microdiffraction measurements of the local strain field (see figure) of a stent‐like Nitinol component subjected to realistic multiaxial loading.

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FEM analysis of localized deformation behaviour in pseudoelastic NiTi shape memory alloys

Wang

Lü

Zhu

et al. 2008

Materialwissenschaft Werkst

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This paper takes into account the localized deformation behaviour of a pseudoelastic NiTi shape memory alloy with finite element method. A three-dimensional micromechanical model has been developed, in which the difference between the elastic properties of austenite and martensite is considered. The model is implemented as User MATerial subroutine (UMAT) into ABAQUS. Then, a polycrystalline NiTi shape memory alloy with [1 1 1] texture under tensile loading is simulated. The main features of the propagation of the deformation band reported in literatures are captured in the simulation. It is also shown that the initiation and propagation of the deformation bands are strongly affected by the geometry of the specimens.

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Superelastic behavior in tension–torsion of an initially-textured Ti–Ni shape-memory alloy

Cited by 74 publications

References 10 publications

Thermal cycling and isothermal deformation response of polycrystalline NiTi: Simulations vs. experiment

Thermal cycling and isothermal deformation response of polycrystalline NiTi: Simulations vs. experiment

Understanding the Deformation and Fracture of Nitinol Endovascular Stents Using In Situ Synchrotron X‐Ray Microdiffraction

FEM analysis of localized deformation behaviour in pseudoelastic NiTi shape memory alloys

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