Electrostimulated plasticity of titanium under tension
- 作者: Korolkov O.E.1, Misochenko A.A.1, Stolyarov V.V.1
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隶属关系:
- Mechanical Engineering Research Institute of RAS
- 期: 编号 16 (2024)
- 页面: 658-669
- 栏目: Physical and chemical foundations of nanotechnology
- URL: https://bakhtiniada.ru/2226-4442/article/view/319468
- DOI: https://doi.org/10.26456/pcascnn/2024.16.658
- EDN: https://elibrary.ru/KLZBIN
- ID: 319468
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全文:
详细
The paper confirms the possibility of electrical stimulation of plasticity, previously discovered in ultrafine-grained titanium. The regimes of pulsed current during tension have been experimentally determined, which make it possible to significantly increase the elongation to failure in commercially pure coarse-grained titanium Grade 4. It is shown that the introduction of single current pulses with an amplitude density of 300-400 A/mm2 with a variable duration from 100 to 1000 μs and a duty cycle from 1000 to 10000 during tension helps to reduce the ultimate tensile strength from 845 to 750 MPa and simultaneously increase the elongation from 10 to 21%. Structural studies using optical microscopy have shown that tension accompanied current does not affect the average grain size, but leads to reducing large particles and a partial dissolution of small inclusions. The results of structural studies, temperature measurements and features of deformation behavior when the current is turned off confirm the predominantly athermal nature of the increase in plasticity.
作者简介
Oleg Korolkov
Mechanical Engineering Research Institute of RAS
Email: korolkov_oleg@vk.com
Researcher
Anna Misochenko
Mechanical Engineering Research Institute of RASPhD, Senior Researcher
Vladimir Stolyarov
Mechanical Engineering Research Institute of RASDr. Sc., Chief Researcher
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