Modern Problems of Materials Science

Fracture Peculiarities of Nitinol under Low-Cycle Fatigue

Volodymyr Budz1, Halyna Krechkovska (krechkovskahalyna@gmail.com)2, Volodymyr Iasnii1

1. Ternopil Ivan Puluj National Technical University
2. Karpenko Physico-Mechanical Institute of NAS of Ukraine

https://doi.org/10.15407/msse2023.067

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Keywords

shape memory alloys, nitinol, fatigue tests, fracture, fractography

Abstract

The features of fracture of shape memory alloy samples (nitinol) under low-cycle fatigue with different load frequencies were investigated. The frequency dependences of such indicators as the number of cycles before the destruction of the samples, and the maximum and residual deformation, respectively, before and after their destruction, were analyzed. It is shown fractographically that the mechanism of fatigue failure of specimens depends on the frequency of loading.

References

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