The Microstructural and Phase Evolution of the 3D Printed Ti–6Al–4V Alloy during Mechanical Loading-Reference-Cited by-同舟云学术

The Microstructural and Phase Evolution of the 3D Printed Ti–6Al–4V Alloy during Mechanical Loading

Published:2023-02-01 Issue:2 Volume:124 Page:226-232
ISSN:0015-3230
Container-title:Физика металлов и металловедение
language:
Short-container-title:Fizika metallov i metallovedenie

Author:

Panin A. V.¹²,Kazachenok M. S.¹,Kazantseva L. A.¹³,Perevalova O. B.¹,Martynov S. A.¹

Affiliation:

1. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences

2. National Research Polytechnic University

3. Tomsk State University of Architecture and Building

Abstract

This paper presents the results of an in situ study on the evolution of the microstructure and phase composition of 3D-printed Ti–6Al–4V samples under tension in the transmission electron microscope col-umn. The microstructure of Ti–6Al–4V specimens manufactured by wire-feed electron beam additive tech-nology is shown to consist of columnar primary β-grains inside of which are α/α'-Ti laths separated by layers of the residual β-phase and gathered into packets. A characteristic feature of 3D-printed Ti–6Al–4V samples is the concentration nonuniformity of the alloying elements due to the partial decomposition of the marten-sitic α'-phase. The reorientation of the α/α'-Ti lattice near interfaces takes place during uniaxial tension. Deformation-induced α'→α" transformations can develop in the reoriented regions of the α/α'-Ti lattice, in places enriched in vanadium.

Publisher

The Russian Academy of Sciences

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