Imperial College London
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DrStellaPedrazzini

Faculty of Engineering, Department of Materials

Senior Lecturer
 
 
 
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Contact

 

s.pedrazzini Website

 
 
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Location

 

1.18Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Segersall:2015:10.1016/j.actamat.2015.03.060,
author = {Segersall, M and Kontis, P and Pedrazzini, S and Bagot, PAJ and Moody, MP and Moverare, JJ and Reed, RC},
doi = {10.1016/j.actamat.2015.03.060},
journal = {Acta Materialia},
pages = {456--467},
title = {Thermal-mechanical fatigue behaviour of a new single crystal superalloy: effects of Si and Re alloying},
url = {http://dx.doi.org/10.1016/j.actamat.2015.03.060},
volume = {95},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The thermal–mechanical fatigue (TMF) behaviour of a new single crystal superalloy suitable for power generation applications is considered. Effects of alloying with either Si or Re are elucidated. Out-of-phase TMF is emphasised, although to clarify the effects arising some static creep deformation tests are also carried out. A significant Si-effect is found: a modest addition of 0.25 wt.% Si increases the TMF life by a factor of 2. A greater lower temperature yield stress and thinner slip bands traversing the γ′-phase – with a concomitant greater resistance to recrystallisation and cracking along them – contribute to the enhanced TMF performance promoted by Si alloying. Alloying with Re, whilst improving the creep behaviour more markedly than Si, does not have such a strong effect on TMF life. The results provide insights into the composition/performance relationships relevant to the TMF performance of single crystal superalloys.
AU  - Segersall,M
AU  - Kontis,P
AU  - Pedrazzini,S
AU  - Bagot,PAJ
AU  - Moody,MP
AU  - Moverare,JJ
AU  - Reed,RC
DO  - 10.1016/j.actamat.2015.03.060
EP  - 467
PY  - 2015///
SN  - 1359-6454
SP  - 456
TI  - Thermal-mechanical fatigue behaviour of a new single crystal superalloy: effects of Si and Re alloying
T2  - Acta Materialia
UR  - http://dx.doi.org/10.1016/j.actamat.2015.03.060
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000358626200046&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S1359645415002852
VL  - 95
ER  -
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