J. Phys. IV France
Volume 112, October 2003
Page(s) 701 - 704

J. Phys. IV France
112 (2003) 701
DOI: 10.1051/jp4:2003979

Laws of the acoustic emission during martensitic transformations in TiNi-based alloys

V. A. Plotnikov

Altai State University, Altai Region, Prospekt Lenina 61, Barnaul 656099, Russia

Analysis bas been perfomied on the regularity of acoustic emission produced during thermoelastic martensitic transformations in TiNi based alloys. The analysis resulted in the conclusion about two types of acoustic dissipation of energy in the course of martensitic transformations. The plastic relaxation of microstresses is significantly dependent on the mechanical properties of the alloys - the yield stress and stress of the martensite shear. The dynamic relaxation of energy is due to the dynamic features of martensite boundaries and depends on the kinetics of martensitic transformations.

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