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Influence of Grain Size Distribution on the Mechanical Behavior of Light Alloys in Wide Range of Strain Rates
National Research Tomsk State University of TSU, Russia; Russian Academic Science, Russia; National Research Tomsk Polytech University of TPU, Russia.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. National Research Tomsk State University of TSU, Russia.ORCID iD: 0000-0003-1634-5882
National Research Tomsk State University of TSU, Russia.
National Research Tomsk State University of TSU, Russia; Russian Academic Science, Russia; National Research Tomsk Polytech University of TPU, Russia.
2017 (English)In: SHOCK COMPRESSION OF CONDENSED MATTER - 2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, AMER INST PHYSICS , 2017, Vol. 1793, UNSP 110001Conference paper, Published paper (Refereed)
Abstract [en]

Inelastic deformation and damage at the mesoscale level of ultrafine grained (UFG) light alloys with distribution of grain size were investigated in wide loading conditions by experimental and computer simulation methods. The computational multiscale models of representative volume element (RVE) with the unimodal and bimodal grain size distributions were developed using the data of structure researches aluminum and magnesium UFG alloys. The critical fracture stress of UFG alloys on mesoscale level depends on relative volumes of coarse grains. Microcracks nucleation at quasi-static and dynamic loading is associated with strain localization in UFG partial volumes with bimodal grain size distribution. Microcracks arise in the vicinity of coarse and ultrafine grains boundaries. It is revealed that the occurrence of bimodal grain size distributions causes the increasing of UFG alloys ductility, but decreasing of the tensile strength.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 1793, UNSP 110001
Series
AIP Conference Proceedings, ISSN 0094-243X
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-139660DOI: 10.1063/1.4971664ISI: 000404282600208Scopus ID: 2-s2.0-85016968654ISBN: 978-0-7354-1457-0 OAI: oai:DiVA.org:liu-139660DiVA: diva2:1133665
Conference
19th Biennial American-Physical-Society (APS) Conference on Shock Compression of Condensed Matter (SCCM), Tampa Bay, Florida, USA, 14–19 June 2015
Note

Funding Agencies|Ministry of Science and Education; Ministry of Russian Federation [1943]; grant of the President of Russian Federation; Tomsk State University Academician D.I. Mendeleev Fund Program [8.2.13.2015]

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-08-24Bibliographically approved

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CiteExportLink to record
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