Abstract

Plastic deformation of austenitic steel AISI 321 at various temperatures was carried out. The temperature dependences of the elastic characteristics of the material have been studied. A difference between the dependences of elastic wave velocities and acoustic birefringence parameter is found at different deformation temperatures. The effect of texture changes and martensitic transformation on the studied elastic parameters is considered. It is found that the birefringence parameter changes non-monotonically upon deformation at 20°C and 40°C, and monotonically at 60°C. It is shown that the difference in the nature of the change is due to the intensity of the martensitic transformation.

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