Precipitation of the ordered α2 phase in a near-α titanium alloy
File(s)Scripta IMI 834 R2.pdf (9.57 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
Precipitate evolution in a near-α alloy was studied using transmission electron microscopy (TEM) and correlative atom probe
tomography (APT) after ageing at 550–700 ◦C for times up to 28 days. It is found that precipitation occurs much faster and is
more prolific in samples heat treated at higher temperatures. Particles were spherical after ageing at 550 ◦C, while after ageing at
700 ◦C they become ellipsoids with the major axis lying close to the [0001] direction. At longer ageing times, the α2 precipitates
were found to contain greater amounts of Sn+Si, indicating that Sn and Si are stronger Ti3(Al,Sn,Si) formers than Al.
tomography (APT) after ageing at 550–700 ◦C for times up to 28 days. It is found that precipitation occurs much faster and is
more prolific in samples heat treated at higher temperatures. Particles were spherical after ageing at 550 ◦C, while after ageing at
700 ◦C they become ellipsoids with the major axis lying close to the [0001] direction. At longer ageing times, the α2 precipitates
were found to contain greater amounts of Sn+Si, indicating that Sn and Si are stronger Ti3(Al,Sn,Si) formers than Al.
Date Issued
2016-03-10
Date Acceptance
2016-02-10
Citation
Scripta Materialia, 2016, 117, pp.81-85
ISSN
1359-6462
Publisher
Elsevier
Start Page
81
End Page
85
Journal / Book Title
Scripta Materialia
Volume
117
Copyright Statement
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/H004882/1
EP/K034332/1
Subjects
Materials
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status
Published