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Evolution of Young's modulus and microplastic characteristics in VT1-0 titanium with different microstructures under cyclic loading
Russian version
Narykova M. V. 1, Kardasev B. K. 1, Betekhtin V. I. 1, Kolobov Yu. R. 2, Kadomtsev A. G. 1
1Ioffe Institute, St. Petersburg, Russia
2Federal Research Center for Problems of Chemical Physics and Medical Chemistry, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
Email: Maria.Narykova@mail.ioffe.ru, vladimir.betekhtin@mail.ioffe.ru, kolobov@icp.ac.ru, Andrej.Kadomtsev@mail.ioffe.ru
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The evolution of the Young's modulus and microplastic properties of VT1-0 titanium in the submicrocrystalline (SMC) and microcrystalline (MC) states was studied at various stages of fatigue testing. Using the acoustic method of a composite piezoelectric vibrator, the amplitude dependences of the elastic modulus E(ε) and the vibration decrement δ(ε) were studied, and microplastic deformation diagrams were constructed. It was established that cyclic loading affects the properties of the MC and SMC states differently. The results of this study are important for understanding the mechanisms of fatigue failure of ultrafine-grained titanium alloys and predicting their durability. Keywords: VT1-0 titanium, Young's modulus, fatigue testing, sub- and microcrystalline structure, microplastic deformation.
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