The contribution of the work of volume changes and shear deformations to the energy balance during uniaxial stretching of metals. Experiment
Sud'enkov Yu. V.1
1St. Petersburg State University, St. Petersburg, Russia
Email: y.sudenkov@yandex.ru
The results of studies of the energy balance in the process of quasi-static stretching of metals are presented. The technique of simultaneous registration of heat release and control of changes in the coefficient of transverse deformations made it possible to assess the contribution of volume changes and shear deformations to the energy balance at all stages of the plastic flow of metals. The obtained results demonstrated the decisive contribution of shear deformations to the change in latent energy during the plastic flow of metals. An optical-acoustic technique for measuring the velocities of longitudinal and transverse waves excited in materials when exposed to laser pulses in the process of quasi-static stretching is presented. Keywords: stretching, metals, heat release, control of the coefficient of transverse deformations, volume changes, shear deformations, energy balance.
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