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Modelling of the mechanical response of Zr-Nb and Ti-Nb alloys in a wide temperature range
Natl Res Tomsk State Univ, Russia.
Natl Res Tomsk State Univ, Russia.
Natl Res Tomsk State Univ, Russia.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. Natl Res Tomsk State Univ, Russia.ORCID iD: 0000-0003-1634-5882
2020 (English)In: International Journal of Mechanics and Materials in Design, ISSN 1569-1713, E-ISSN 1573-8841, Vol. 16, no 1, p. 215-224Article in journal (Refereed) Published
Abstract [en]

This article presents the results of modeling the mechanical behavior of Zr-Nb and Ti-Nb alloys in a range of strain rates from 0.001 to 1000 1/s and temperature range 297-1273 K. A modification of constitutive equations describing the mechanical response of fine-grained and coarse-grained Zr-1Nb and Ti-13Nb-13Zr alloys in a wide temperature range is proposed. It was shown that the phase transition between the hexagonal closed packed and body-centered cubic crystal structure at elevated temperatures leads to a sharp change in strain rate sensitivity of the yield strength of Zr-Nb and Ti-Nb alloys. The proposed modifications of constitutive equations make it possible to describe the strain hardening and the strain rate sensitivity of the plastic flow stress over a wide temperature range in the coarse-crystalline and ultrafine-grained Zr-Nb and Ti-Nb alloys. The results can be used for engineering analysis of structural elements of technical systems and design of manufacturing technologies for biomedical products.

Place, publisher, year, edition, pages
SPRINGER HEIDELBERG , 2020. Vol. 16, no 1, p. 215-224
Keywords [en]
Yield stress; Strain rate sensitivity; Ultra-fine grained structure; Elevated temperature; Zirconium-niobium alloys; Titanium-niobium alloys
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-165006DOI: 10.1007/s10999-019-09447-zISI: 000520308500015OAI: oai:DiVA.org:liu-165006DiVA, id: diva2:1422729
Note

Funding Agencies|Russian Science Foundation (RSF)Russian Science Foundation (RSF) [18-71-00117]

Available from: 2020-04-08 Created: 2020-04-08 Last updated: 2020-04-08

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