Tungsten-based bcc-superalloys
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Applications from nuclear energy to rockets and jet engines are underpinned by advanced high temperature materials. Whilst state of the art, the performance of current nickel-based superalloys is fundamentally limited to Ni’s melting point, T. Here, we develop an analogous superalloy concept but with superior high temperature capability by transitioning to a bcc tungsten base, T. This strategy involves reinforcing bcc -W by TiFe intermetallic compound, which results in impressive high temperature compressive strengths of 500 MPa at
. This bcc-superalloy design approach has wider applicability to other bcc alloy bases, including Mo, Ta, and Nb, as well as to refractory-metal high entropy alloys (RHEAs). By investigation of the underlying phase equilibria, thermodynamic modelling, characterisation and mechanical properties, we demonstrate the capability of ternary W-Ti-Fe tungsten-based bcc-superalloys as a new class of high temperature materials.
. This bcc-superalloy design approach has wider applicability to other bcc alloy bases, including Mo, Ta, and Nb, as well as to refractory-metal high entropy alloys (RHEAs). By investigation of the underlying phase equilibria, thermodynamic modelling, characterisation and mechanical properties, we demonstrate the capability of ternary W-Ti-Fe tungsten-based bcc-superalloys as a new class of high temperature materials.
Date Issued
2021-06-01
Date Acceptance
2021-03-17
Citation
Applied Materials Today, 2021, 23 (1), pp.1-6
ISSN
2352-9407
Publisher
Elsevier
Start Page
1
End Page
6
Journal / Book Title
Applied Materials Today
Volume
23
Issue
1
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
The Royal Society
United Kingdom Atomic Energy Authority
Identifier
https://www.sciencedirect.com/science/article/pii/S2352940721000792
Grant Number
138874
N/A
INF/R1/180085
2015047
Subjects
0204 Condensed Matter Physics
0912 Materials Engineering
1007 Nanotechnology
Publication Status
Published
Article Number
101014
Date Publish Online
2021-03-30