Effect of Severe Plastic Deformation on the Acoustic Emission and the Thermal Effects in Titanium Nickelide


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Abstract

Acoustic emission and differential scanning calorimetry have been used to study the structural changes and the thermal effects in a TiNi alloy after severe plastic deformation (SPD). The character and the thermal effect after SPD are shown to demonstrate partial amorphization of the alloy. The heat release observed upon the first heating after SPD in the temperature range 250–380°C corresponds to solidification. The number of detected acoustic emission signals from the TiNi alloy and their amplitudes are found to decrease after SPD.

About the authors

N. N. Belousov

Galkin Donetsk Institute for Physics and Technology

Email: lena@smel.math.spbu.ru
Ukraine, Donetsk, 83114

V. A. Andreev

OOO Matek-Sma Industrial Center; Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: lena@smel.math.spbu.ru
Russian Federation, Moscow, 117449; Moscow, 119334

E. V. Chernyaeva

St. Petersburg State University

Author for correspondence.
Email: lena@smel.math.spbu.ru
Russian Federation, St. Petersburg, 198504

A. E. Volkov

St. Petersburg State University

Email: lena@smel.math.spbu.ru
Russian Federation, St. Petersburg, 198504

Yu. N. V’yunenko

OOO Optimikst LTD

Email: lena@smel.math.spbu.ru
Russian Federation, St. Petersburg, 195426


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