The Influence of Dimesions and Phase State of Structural Elements on Mechanical Properties of Binary Alloys of the Ti–Nb and Zr–Nb Systems

The Influence of Dimesions and Phase State of Structural Elements on Mechanical Properties of Binary Alloys of the Ti–Nb and Zr–Nb Systems

The results of investigation of the influence of the structural element size and phase state of the Ti – 45 wt.% Nb and Zr – 1 wt.% Nb binary alloys on their mechanical properties are presented. The structural states of the alloys with the structural elements of different dimensions were formed from...

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Bibliographic Details
Published in:Russian physics journal Vol. 61; no. 10; pp. 1899 - 1907
Main Authors: Eroshenko, A. Yu, Sharkeev, Yu. P., Glukhov, I. A., Uvarkin, P. V., Mairambekova, A. M., Tolmachev, A. I.
Format: Journal Article
Language:English
Published: New York Springer US 01-02-2019
Springer
Springer Nature B.V
Subjects:
Alloy systems
Alloying elements
Alloys
Analysis
Annealing
Beta phase
Binary alloys
Condensed Matter Physics
Dependence
Hadrons
Hardness (Materials)
Heavy Ions
Lasers
Mathematical and Computational Physics
Mechanical properties
Metals (Materials)
Microhardness
Niobium base alloys
Nuclear Physics
Optical Devices
Optics
Phase composition
Photonics
Physics
Physics and Astronomy
Specialty metals industry
Structural members
Theoretical
Ultrafines
Zirconium
phase composition
yield strength
microhardness
microstructure
Ti – 45 wt.% Nb and Zr – 1 wt.% Nb alloys
structure elements size
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Summary:The results of investigation of the influence of the structural element size and phase state of the Ti – 45 wt.% Nb and Zr – 1 wt.% Nb binary alloys on their mechanical properties are presented. The structural states of the alloys with the structural elements of different dimensions were formed from the ultrafine-grained state via annealing. The curves of dependence of the yield strength and microhardness on the average size of the structural elements, d – 1/2 , are obtained using the Hall–Petch relation. It is shown that for the Zr – 1 wt.% Nb alloy, the Hall–Petch relation is fulfilled in the entire range of sizes under study, from ultrafine-grained to finegrained states 0.2–1.9 μm. For the Ti – 45 wt.% Nb alloy, in the analysis of the Hall–Petch relationship within the structural element size range 0.43–45 μm, its phase composition is taken into consideration, specifically, the presence of dispersion-strengthened β -phase grains, α -phase subgrains, nonequilibrium nanosized ω - phase, and the bimodal grain-subgrain structure.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-019-01616-z