Role of the Pulse Current Duty Cycle during Titanium Tension

V. V. Stolyarov; Столяров В. В.

doi:10.31857/S0235711923040168

Role of the Pulse Current Duty Cycle during Titanium Tension

Authors: Stolyarov V.V.¹
Affiliations:
1. Mechanical Engineering Research Institute of the Russian Academy of Sciences
Issue: No 4 (2023)
Pages: 26-33
Section: НАДЕЖНОСТЬ, ПРОЧНОСТЬ, ИЗНОСОСТОЙКОСТЬ МАШИН И КОНСТРУКЦИЙ
URL: https://journals.rcsi.science/0235-7119/article/view/137597
DOI: https://doi.org/10.31857/S0235711923040168
EDN: https://elibrary.ru/XXEOOW
ID: 137597

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Abstract
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Abstract

The effect of a pulsed current on titanium tensile deformation obtained by postdeformation annealing after cold rolling of the coarse-grained and ultrafine-grained states has been considered. The effect of the duty cycle of the pulse current over a wide range on the shape of the stress–strain curves and mechanical properties has been studied. It is shown that an increase in the duty cycle results in an enhancement in the thermal effect of the current and a decrease in the flow stresses, strength, and plasticity, as well as in intense necking. A decrease in the duty cycle leads to the absence of heating and the occurrence of the electroplastic effect and an increase in the strength and plasticity, which depends on the structural state of coarse-grained titanium and the method of titanium production. The possible physical mechanisms of hardening associated with twinning, strain aging, and low-cycle fatigue have been considered.

Keywords

titanium, pulse current, duty cycle, tension, microstructure, hardening

About the authors

V. V. Stolyarov

Mechanical Engineering Research Institute of the Russian Academy of Sciences

Author for correspondence.
Email: vlstol@mail.ru
101900, Moscow, Russia

References

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