PSI - Issue 13

Milan Uhríčik et al. / Procedia Structural Integrity 13 (2018) 1571 – 1576 Milan Uhríčik / Structural Integrity Procedia 00 (2018) 000 – 000

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speeds, as in the case of cold deformation, or by a rapid load deformation. The formation of internal damping peaks is thus caused by the transformation of the deformation-induced martensite back to austenite. In this case there was the release of internal energy, which turned out to be the peak of internal damping. Talonen et al., 2004 observed a local maximum of internal damping at about 130 °C. Santos et al. 2010, obtained the peak of the internal damping within the temperature range of 100-150 °C, what they attributed to the presence of α´martensite.

Acknowledgements

This work has been supported by Scientific Grant Agency of Ministry of Slovak Republic and Slovak Academy of Science, No. 1/0683/15.

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