Skip to main content

Research Repository

Advanced Search

Microstructure and tensile properties of additive manufactured Ti-6Al-4V with refined prior-? grain structure obtained by rapid heat treatment

Zou, Zhiyi; Simonelli, Marco; Katrib, Juliano; Dimitrakis, Georgios; Hague, Richard

Microstructure and tensile properties of additive manufactured Ti-6Al-4V with refined prior-? grain structure obtained by rapid heat treatment Thumbnail


Authors

Zhiyi Zou

Juliano Katrib

RICHARD HAGUE RICHARD.HAGUE@NOTTINGHAM.AC.UK
Professor of Additive Manufacturing



Abstract

Heat treatments tailored for additive manufactured Ti-6Al-4V can be used to attain desirable microstructures associated with superior mechanical properties. Rapid heat treatments, for example, can be used to recrystallise the microstructure of laser powder bed fusion (L-PBF) Ti-6Al-4V to obtain refined and quasi-equiaxed prior-? grains. In this study, we discuss the interplay between refined microstructures and the tensile properties of Ti-6Al-4V specimens. The influence of individual microstructural constituents on the tensile properties are examined in detail and directly compared to those found in specimens subject to conventional annealing treatments. It was found that rapid heat treatments into the ? phase field can significantly refine the size of the prior-? grains found in as-built L-PBF Ti-6Al-4V, as well as alter the size and morphological arrangement of the resulting ? laths. The proposed new heat treatments are clearly shown to have strengthened the alloy with no apparent detriment to the ductility of the material.

Journal Article Type Article
Acceptance Date Apr 10, 2021
Online Publication Date Apr 14, 2021
Publication Date May 13, 2021
Deposit Date Apr 20, 2021
Publicly Available Date Apr 15, 2022
Journal Materials Science and Engineering: A
Print ISSN 0921-5093
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 814
Article Number 141271
DOI https://doi.org/10.1016/j.msea.2021.141271
Keywords Mechanical Engineering; General Materials Science; Mechanics of Materials; Condensed Matter Physics
Public URL https://nottingham-repository.worktribe.com/output/5470087
Publisher URL https://www.sciencedirect.com/science/article/pii/S0921509321005402

Files





You might also like



Downloadable Citations