A numerical study of “functional fatigue” of closed-cell NiTi shape memory foams

The porous titanium nickelide is very popular in various industries due to unique combination of physical and mechanical properties such as shape memory effect, high corrosion resistance, and biocompatibility. The non-equilibrium molecular dynamics simulation was applied to study the influence of porosity degree on mechanical properties of porous amorphous titanium nickelide at uniaxial tension, uniaxial compression, and uniform shear. We have found that the porous amorphous alloy is characterized by a relatively large value of Young's modulus in comparison to its crystalline analogue. It has been found that the system with a percolated network of pores exhibits improved elastic characteristics associated with resistance to tensile and shear. The system contained isolated spherical pores is more resistant to compression and less resistant to tensile and shear. These results can be applied to develop and improve the methods for making amorphous metal foams.

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A numerical study of “functional fatigue” of closed-cell NiTi shape memory foams

Cited by 9 publications

References 51 publications

Modeling microstructure evolution in shape memory alloy rods via Legendre wavelets collocation method

Modeling microstructure evolution in shape memory alloy rods via Legendre wavelets collocation method

Toward enabling manufacturing paradigm of 4D printing of shape memory materials: Open literature review

Mechanical response of mesoporous amorphous NiTi alloy to external deformations

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