Imperial College London
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ProfessorDavidDye

Faculty of Engineering, Department of Materials

Professor of Metallurgy
 
 
 
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Contact

 

+44 (0)20 7594 6811david.dye

 
 
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Location

 

1.09GoldsmithSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Collins:2021:10.1007/s11661-021-06147-2,
author = {Collins, CR and Dear, FF and Rugg, D and Dye, D},
doi = {10.1007/s11661-021-06147-2},
journal = {Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science},
pages = {1596--1608},
title = {The effect of dissolved nitrogen on the fatigue behavior of Ti-6Al-4V},
url = {http://dx.doi.org/10.1007/s11661-021-06147-2},
volume = {52},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The effect of nitrogen additions on fatigue behavior has been examined in near-equiaxed, rolled Ti-6Al-4V bar. This is the first-time nitrogen content that has been systematically explored with respect to monotonic and cyclic properties in a Ti-6Al-4V alloy base composition. Nitrogen additions were found to increase the β-transus temperature and strength, but they decreased ductility, even in microstructures where some β phase remained. This carried across into both the low- and high cycle fatigue behavior; even small contents of 240 and 560 ppmwN caused reductions in both low cycle fatigue life and high cycle fatigue strength. In samples containing 240 and 560 ppmwN, a conventional striated fractographic appearance was observed, but a dramatic change to a macroscopically brittle fracture surface was observed at 1800 and 3600 ppmwN, but still with substantial evidence of plasticity at the microscale. Therefore, neither microstructure or fractographic examination, nor EDX-based compositional analysis in the electron microscope are necessarily a reliable indicator of an absence of deleterious nitrogen contamination. This is significant for the investigation of potentially nitrogen-contaminated surface-initiated cracks, either due to service or processing exposures.
AU  - Collins,CR
AU  - Dear,FF
AU  - Rugg,D
AU  - Dye,D
DO  - 10.1007/s11661-021-06147-2
EP  - 1608
PY  - 2021///
SN  - 1073-5623
SP  - 1596
TI  - The effect of dissolved nitrogen on the fatigue behavior of Ti-6Al-4V
T2  - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
UR  - http://dx.doi.org/10.1007/s11661-021-06147-2
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000625043100002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007%2Fs11661-021-06147-2
UR  - http://hdl.handle.net/10044/1/87753
VL  - 52
ER  -
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