Effect of interstitial nanoscale mesoscopic structure states on strength and ductility of solids

V. E. Panin, V. E. Egorushkin, S. V. Panin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It was shown that an increase in impact toughness of the Ti-6Al-4V alloy (including at low temperatures) was associated with two mechanisms. The first one was the suppression of the discontinuity nucleation due to the dynamic nature of the structural rearrangement provided by interstitial mesoscopic nanoscale structural states (IMNSS) under the crystal lattice curvature conditions as well as plastic distortion. The second mechanism was the ductile material extrusion in the superplastic flow mode (down to T = -70qC). This enabled to extensively deform specimens without failure (in fact, in the superplastic flow mode) upon impact bending. It was discussed that the development of deformation defect flows was realized according to the mechanism of the structural-phase transformation.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology
EditorsVictor E. Panin, Vasily M. Fomin
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440463
DOIs
Publication statusPublished - 14 Dec 2020
EventInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020 - Tomsk, Russian Federation
Duration: 5 Oct 20209 Oct 2020

Publication series

NameAIP Conference Proceedings
Volume2310
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020
CountryRussian Federation
CityTomsk
Period5.10.209.10.20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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