DECOMPOSITION OF THE METASTABLE BETA PHASE IN HIGH-STRENGTH TITANIUM ALLOYS VST5553, Ti–10V–2Fe–3Al, and BETA-21S-Reference-Cited by-同舟云学术

DECOMPOSITION OF THE METASTABLE BETA PHASE IN HIGH-STRENGTH TITANIUM ALLOYS VST5553, Ti–10V–2Fe–3Al, and BETA-21S

Published:2023-09-01 Issue:9 Volume:124 Page:854-860
ISSN:0015-3230
Container-title:Физика металлов и металловедение
language:
Short-container-title:Fizika metallov i metallovedenie

Author:

Kalienko M. S.¹²,Zhelnina A. V,¹²,Popov A. A.¹²³

Affiliation:

1. Public Stock Company "VSMPO-AVISMA Corporation"

2. Ural Federal University

3. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Abstract

In this paper the decomposition and evolution of microstructures of the metastable β-phase during aging of Ti10V2Fe3Al, VST5553, and Beta-21S alloys were studied. A comparative study of the evolution of the microstructure and crystal lattice of phases in alloys during aging has been carried out. Features of the nucleation and growth of the secondary α-phase formed during aging were observed using scanning electron microscopy. The concomitant diffusion redistribution of alloying elements between the phases was studied using the method of full-profile X-ray diffraction analysis. It has been established that during aging, the change in the periods of crystal lattices in the studied alloys has a general pattern, which is associated with the common nature of the process of diffusion redistribution of alloying elements between phases. The morphology formed during the decomposition of the secondary α-phase differs between alloys and is determined by the stability of the β-phase after quenching.

Publisher

The Russian Academy of Sciences

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