Results 131 to 140 of about 350 (181)

Shape Memory and Pseudoelasticity in Metal Nanowires

Physical Review Letters, 2005
Structural reorientations in metallic fcc nanowires are controlled by a combination of size, thermal energy, and the type of defects formed during inelastic deformation. By utilizing atomistic simulations, we show that certain fcc nanowires can exhibit both shape memory and pseudoelastic behavior. We also show that the formation of defect-free twins, a
Harold S, Park, Ken, Gall, Jonathan A, Zimmerman   +2 more
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Pseudoelastic NiTiNOL in Orthopaedic Applications

Shape Memory and Superelasticity, 2020
Pseudoelastic NiTiNOL presents an attractive material option for devices used in clinical orthopaedic applications. The capacity of the material to exert sustained compression during shape recovery aligns well with the mechanobiological factors associated with bone healing, particularly in applications such as fracture healing and joint fusion ...
David Safranski, Kenneth Dupont, Ken Gall   +2 more
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Pseudoelasticity in Fe3Ga single crystals

Scripta Materialia, 2005
Abstract We first found pseudoelasticity in Fe 3 Ga single crystals regardless of a thermoelastic martensitic transformation. Superpartial dislocations with Burgers vector of 1/4[1 1 1] were pulled back by nearest-neighbour and next-nearest-neighbour antiphase boundaries during unloading, resulting in the pseudoelasticity.
H.Y. Yasuda, M. Aoki, A. Takaoka, Y. Umakoshi   +3 more
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On the size of the hysteresis in pseudoelasticity

Continuum Mechanics and Thermodynamics, 1989
Pseudoelasticity is a phenomenon that occurs in alloys with shape memory: In a loading-unloading cycle a body will return to its original configuration, but its path in a load-deformation diagram will run through a hysteresis loop.
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Pseudoelasticity and Shape Memory

1986
Alloys with shape memory are characterized by a strong dependence of the load-deformation behaviour upon temperature. At low temperatures they behave much like plastic bodies with initial elastic deformation, yield and residual deformation after unloading, but at higher temperatures they exhibit pseudoelastic behaviour, i.e.
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Theory of pseudoelasticity and the shape-memory effect

Physical Review B, 1992
A theory of pseudoelasticity has been developed in the phenomenological Ginzburg-Landau scheme. The system characterized by «stripe»-type ferroelastic domain structure has been discussed using the transfer-integral method, which directly gives the equilibrium density of domain boundaries and the response of domain pattern against the external stress ...
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Thermodynamics of pseudoelasticity ?an analytical approach

Acta Mechanica, 1993
The phenomenon of pseudo-elasticity is connected with a phase transition. Its description requires a non-convex free energy and a non-monotone load-deformation curve. Realistic functions like that are too complicated to permit the analytic calculation of phase equilibria and the evaluation of, stability properties of a phase mixture.
S. Fu, Y. Huo, I. M�ller
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State Functions for a Pseudoelastic Body

1982
The shape of the load–deformation curves of a pseudo-elastic body depends strongly on the temperature. While at low temperatures the body exhibits properties akin to those of a plastic body, it behaves like a true (non-linear) elastic body at high temperatures.
I. Müller, K. Wilmanski
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Phase mixtures in dynamics of pseudoelasticity

Continuum Mechanics and Thermodynamics, 1995
The paper provides a numerical treatment of phase mixtures in pseudoelasticity from a purely mathematical point of view. This is based on the result that the approximate solution may consist of persistent oscillations in strain which resemble the experimentally observed interface patterns. This result is obtained from a sequence of solutions for a rate-
Liu, I-Shih, Frid, H.
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Equilibrium thermodynamics of pseudoelasticity and quasiplasticity

Continuum Mechanics and Thermodynamics, 1996
Motivated by recent experimental results by Glasauer [7], a thermodynamic theory of shape memory alloys is proposed, which includes not only the high temperature - pseudoelastic - behavior but also the low temperature range of quasiplasticity. Due to the occurance of three different phases - austenite and two martensitic variants - several cases of two-
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