Mechanical behavior and microstructure evolution of Ti-6.5Al-2Zr-1Mo-1V/TiB metal-matrix composites during deformation

Mechanical behavior and microstructure evolution of Ti-6.5Al-2Zr-1Mo-1V/TiB metal-matrix composites during deformation

Maxim Ozerov, Vitaly Sokolovsky, Alexander Galtsev, Nikita Stepanov, Sergey Zherebtsov

Abstract. The Ti-6.5Al-2Zr-1Mo-1V/TiB metal-matrix composites with different amounts of TiB reinforcements (~2.0, 6.0 and 10.0 vol. %) were produced by vacuum arc melting. The initial microstructure of the synthesized composites composed of two-phase α+β matrix with embedded boride particles. The addition of borides resulted in 15-35% increase in strength without a visible drop in ductility. The alloy with the highest amount of the reinforcement attained yield strength of 1100 MPa, peak strength of 1670 MPa and compression ductility of 10 % at room temperature. Microstructure evolution during hot compression was associated with dynamic recrystallization of the matrix and rearrangement/shortening of TiB fibers. The composite with 10.0 vol. % of TiB demonstrated noticeably higher strength at elevated temperatures in comparison with non-reinforced alloy.

Keywords
Titanium Alloy, Metal-Matrix Composite, Boride Fibers, Microstructure, Mechanical Properties, Mechanical Behavior, Aspect Ratio

Published online , 7 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Maxim Ozerov, Vitaly Sokolovsky, Alexander Galtsev, Nikita Stepanov, Sergey Zherebtsov, Mechanical behavior and microstructure evolution of Ti-6.5Al-2Zr-1Mo-1V/TiB metal-matrix composites during deformation, Materials Research Proceedings, Vol. 32, pp 280-286, 2023

DOI: https://doi.org/10.21741/9781644902615-32

The article was published as article 32 of the book Superplasticity in Advanced Materials

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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