Journal article 801 views
Microstructural Control of Fatigue Behaviour in a Novel α + β Titanium Alloy
,
William Davey,
Thomas,
Berment-Parr
Metals, Volume: 9, Issue: 11, Start page: 1200
Swansea University Authors:
Martin Bache, Helen Davies , William Davey
Full text not available from this repository: check for access using links below.
DOI (Published version): 10.3390/met9111200
Abstract
The novel titanium alloy TIMETAL® 407 (Ti-407) has been developed as an alternative to Ti-6Al-4V (Ti-6-4), for applications that demand relatively high ductility and energy absorption.Demonstrating a combination of lower strength and greater ductility, the alloy introduces a variety ofcost reduction...
| Published in: | Metals |
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| ISSN: | 2075-4701 |
| Published: |
MDPI AG
2019
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa52224 |
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| Abstract: |
The novel titanium alloy TIMETAL® 407 (Ti-407) has been developed as an alternative to Ti-6Al-4V (Ti-6-4), for applications that demand relatively high ductility and energy absorption.Demonstrating a combination of lower strength and greater ductility, the alloy introduces a variety ofcost reduction opportunities, including improved machinability. Thermo-mechanical processing andits effects on microstructure and subsequent mechanical performance are characterised, including adetailed assessment of the fatigue and crack propagation properties. Demonstrating relatively strongbehaviour under high-cycle fatigue loading, Ti-407 is nevertheless susceptible to time-dependentfatigue effects. Its sensitivity to dwell loading is quantified, and the associated deformation andfracture mechanisms responsible for controlling fatigue life are explored. The intimate relationshipbetween thermo-mechanical processing, micro-texture and fatigue crack initiation through thegeneration of quasi-cleavage facets is highlighted. Consistent fatigue crack growth kinetics aredemonstrated, independent of local microstructure. |
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| Keywords: |
Ti-407, dwell sensitive fatigue, quasi-cleavage facets, micro-texture, macro-zones |
| College: |
Faculty of Science and Engineering |
| Issue: |
11 |
| Start Page: |
1200 |