Characterizing solute hydrogen and hydrides in pure and alloyed titanium at the atomic scale
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Ti
has
a high affinity for hydrogen and are typical hydride formers
.
Ti
-hydride are brittle
phases which probably cause premature failure of
Ti
-alloys. Here, we used atom probe
tomography and electron microscopy to investigate the hydrogen di
stribution in a set of
specimens of commercially pure Ti
,
model and commercial
Ti
-alloys. Although likely
partly introduced during specimen preparation with the focused-
ion beam, we show
formation of Ti-hydrides along
α
grain boundaries and
α
/
β
phase boundaries in
commercial pure Ti and
α
+
β
binary model alloys
.
No hydrides are observed in the
α
phase in alloys with Al addition or quenched-in Mo supersaturation
.
has
a high affinity for hydrogen and are typical hydride formers
.
Ti
-hydride are brittle
phases which probably cause premature failure of
Ti
-alloys. Here, we used atom probe
tomography and electron microscopy to investigate the hydrogen di
stribution in a set of
specimens of commercially pure Ti
,
model and commercial
Ti
-alloys. Although likely
partly introduced during specimen preparation with the focused-
ion beam, we show
formation of Ti-hydrides along
α
grain boundaries and
α
/
β
phase boundaries in
commercial pure Ti and
α
+
β
binary model alloys
.
No hydrides are observed in the
α
phase in alloys with Al addition or quenched-in Mo supersaturation
.
Date Issued
2018-05-01
Date Acceptance
2018-03-03
Citation
Acta Materialia, 2018, 150, pp.273-280
ISSN
1359-6454
Publisher
Elsevier
Start Page
273
End Page
280
Journal / Book Title
Acta Materialia
Volume
150
Copyright Statement
© 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. This manuscript is 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)
Rolls-Royce Plc
Rolls-Royce Deutschland Ltd & CoKG
Grant Number
EP/K034332/1
4600147967
PO 9900058948
Subjects
0912 Materials Engineering
0913 Mechanical Engineering
Materials
Publication Status
Published
Date Publish Online
2018-03-09