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A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb

Will Harrison Orcid Logo, Zak Abdallah, Mark Whittaker Orcid Logo

Materials, Volume: 7, Issue: 3, Pages: 2194 - 2209

Swansea University Authors: Will Harrison Orcid Logo, Zak Abdallah, Mark Whittaker Orcid Logo

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DOI (Published version): 10.3390/ma7032194

Abstract

Gamma titanium aluminides (γ-TiAl) display significantly improved high temperature mechanical properties over conventional titanium alloys. Due to their low densities, these alloys are increasingly becoming strong candidates to replace nickel-base superalloys in future gas turbine aeroengine compone...

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Published in: Materials
ISSN: 1996-1944
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa21248
first_indexed 2016-03-14T16:20:50Z
last_indexed 2019-10-15T05:11:56Z
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spelling 2019-10-14T16:37:18.2171726 v2 21248 2015-05-08 A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb dae59f76fa4f63123aa028abfcd2b07a 0000-0002-0380-7075 Will Harrison Will Harrison true false ae66331ad6f4d38f8799b9b5375770dd Zak Abdallah Zak Abdallah true false a146c6d442cb2c466d096179f9ac97ca 0000-0002-5854-0726 Mark Whittaker Mark Whittaker true false 2015-05-08 ACEM Gamma titanium aluminides (γ-TiAl) display significantly improved high temperature mechanical properties over conventional titanium alloys. Due to their low densities, these alloys are increasingly becoming strong candidates to replace nickel-base superalloys in future gas turbine aeroengine components. To determine the safe operating life of such components, a good understanding of their creep properties is essential. Of particular importance to gas turbine component design is the ability to accurately predict the rate of accumulation of creep strain to ensure that excessive deformation does not occur during the component’s service life and to quantify the effects of creep on fatigue life. The theta (θ) projection technique is an illustrative example of a creep curve method which has, in this paper, been utilised to accurately represent the creep behaviour of the γ-TiAl alloy Ti -45Al-2Mn-2Nb. Furthermore, a continuum damage approach based on the θ-projection method has also been used to represent tertiary creep damage and accurately predict creep rupture. Journal Article Materials 7 3 2194 2209 1996-1944 14 3 2014 2014-03-14 10.3390/ma7032194 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University RCUK 2019-10-14T16:37:18.2171726 2015-05-08T13:41:04.6964203 Will Harrison 0000-0002-0380-7075 1 Zak Abdallah 2 Mark Whittaker 0000-0002-5854-0726 3 0021248-14032016135603.pdf Cronfapaper.pdf 2016-03-14T13:56:03.1570000 Output 1133896 application/pdf Version of Record true 2016-03-14T00:00:00.0000000 Distributed under the terms of a Creative Commons Attribution Non-Commercial (CC-BY-3.0) true
title A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
spellingShingle A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
Will Harrison
Zak Abdallah
Mark Whittaker
title_short A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
title_full A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
title_fullStr A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
title_full_unstemmed A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
title_sort A Model for Creep and Creep Damage in the γ-Titanium Aluminide Ti-45Al-2Mn-2Nb
author_id_str_mv dae59f76fa4f63123aa028abfcd2b07a
ae66331ad6f4d38f8799b9b5375770dd
a146c6d442cb2c466d096179f9ac97ca
author_id_fullname_str_mv dae59f76fa4f63123aa028abfcd2b07a_***_Will Harrison
ae66331ad6f4d38f8799b9b5375770dd_***_Zak Abdallah
a146c6d442cb2c466d096179f9ac97ca_***_Mark Whittaker
author Will Harrison
Zak Abdallah
Mark Whittaker
author2 Will Harrison
Zak Abdallah
Mark Whittaker
format Journal article
container_title Materials
container_volume 7
container_issue 3
container_start_page 2194
publishDate 2014
institution Swansea University
issn 1996-1944
doi_str_mv 10.3390/ma7032194
document_store_str 1
active_str 0
description Gamma titanium aluminides (γ-TiAl) display significantly improved high temperature mechanical properties over conventional titanium alloys. Due to their low densities, these alloys are increasingly becoming strong candidates to replace nickel-base superalloys in future gas turbine aeroengine components. To determine the safe operating life of such components, a good understanding of their creep properties is essential. Of particular importance to gas turbine component design is the ability to accurately predict the rate of accumulation of creep strain to ensure that excessive deformation does not occur during the component’s service life and to quantify the effects of creep on fatigue life. The theta (θ) projection technique is an illustrative example of a creep curve method which has, in this paper, been utilised to accurately represent the creep behaviour of the γ-TiAl alloy Ti -45Al-2Mn-2Nb. Furthermore, a continuum damage approach based on the θ-projection method has also been used to represent tertiary creep damage and accurately predict creep rupture.
published_date 2014-03-14T06:41:36Z
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score 11.048171

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