| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gao, Nong
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (38/38 displayed)
- 2024Enhanced mechanical properties and microstructural stability of ultrafine-grained biodegradable Zn-Li-Mn-Mg-Cu alloys produced by rapid solifictaion and high-pressure torsioncitations
- 2024Enhanced mechanical properties and microstructural stability of ultrafine-grained biodegradable Zn–Li–Mn–Mg–Cu alloys produced by rapid solidification and high-pressure torsioncitations
- 2024Interfacial characteristics of multi-material SS316L/IN718 fabricated by laser powder bed fusion and processed by high-pressure torsion
- 2023High densification level and hardness values of additively manufactured 316L stainless steel fabricated by fused filament fabricationcitations
- 2023High densification level and hardness values of additively manufactured 316L stainless steel fabricated by fused filament fabricationcitations
- 2022Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusioncitations
- 2022Effect of heat treatment on fatigue crack growth in IN718/316L multiple-materials layered structures fabricated by laser powder bed fusioncitations
- 2021Fatigue crack growth in IN718/316L multi-materials layered structures fabricated by laser powder bed fusioncitations
- 2021Abnormal grain growth in a Zn-0.8Ag alloy after processing by high-pressure torsioncitations
- 2021Data rich imaging approaches assessing fatigue crack initiation and early propagation in a DS superalloy at room temperaturecitations
- 2020Microstructure and mechanical properties of a Zn-0.5Cu alloy processed by high-pressure torsioncitations
- 2020Effect of sample orientation on the microstructure and microhardness of additively manufactured AlSi10Mg processed by high-pressure torsioncitations
- 2020Effect of sample orientation on the microstructure and microhardness of additively manufactured AlSi10Mg processed by high-pressure torsioncitations
- 2020Comparison between virgin and recycled 316L SS and AlSi10Mg powders used for laser powder bed fusion additive manufacturingcitations
- 2020Comparison between virgin and recycled 316L SS and AlSi10Mg powders used for laser powder bed fusion additive manufacturingcitations
- 2019On the mechanism of oxidation-fatigue damage at intermediate temperatures in a single crystal Ni-based superalloycitations
- 2016Effects of oxidation on fatigue crack initiation and propafation in an advanced disk alloy
- 2016An investigation into the effect of substrate on the load-bearing capacity of thin hard coatingscitations
- 2015Influence of oxidation on fatigue crack initiation and propagation in turbine disc alloy N18citations
- 2014Grain size effects in a Ni-based turbine disc alloy in the time and cycle dependent crack growth regimescitations
- 2013Comparison of fatigue crack propagation behaviour in two gas turbine disc alloys under creep–fatigue conditions: evaluating microstructure, environment and temperature effectscitations
- 2012Characterization of high pressure torsion processed 7150 Al-Zn-Mg-Cu alloycitations
- 2011Hardness homogeneity on longitudinal and transverse sections of an aluminum alloy processed by ECAPcitations
- 2011Influence of strain rate on the characteristics of a magnesium alloy processed by high-pressure torsioncitations
- 2010The evolution of homogeneity during processing aluminium alloys by HPTcitations
- 2010Fabrication of MEMS components using ultra fine grained aluminiumcitations
- 2007Effects of graphite nodules on crack growth behaviour of austempered ductile ironcitations
- 2007Influence of grain structure and slip planarity on fatigue crack growth in low alloying artificially aged 2xxx aluminium alloyscitations
- 2006In situ analysis of cracks in structural materials using synchrotron X-ray tomography and diffractioncitations
- 2006Relations between microstructure, precipitation, age-formability and damage tolerance of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age formingcitations
- 2005Room temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield strength developmentcitations
- 2005Microstructure and precipitation in Al-Li-Cu-Mg-(Mn, Zr) alloyscitations
- 2005Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressingcitations
- 2004Microstructural developments in a spray-cast Al-7034 alloy processed by equal-channel angular pressing
- 2004Development of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age-forming
- 2002Precipitation in stretched Al-Cu-Mg alloys with reduced alloying content studied by DSC, TEM and atom probe
- 2002Development of new damage tolerant alloys for age-forming
- 2000Fatigue-life predictions including the effects of hold time and multiaxial loads on crack-coalescence behaviourcitations
Places of action
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article
Comparison of fatigue crack propagation behaviour in two gas turbine disc alloys under creep–fatigue conditions: evaluating microstructure, environment and temperature effects
Abstract
Gas turbine disc materials should possess excellent fatigue and creep performance due to the severe in service conditions experienced. In this study, a comparison of fatigue crack propagation behaviour in two turbine disc alloys, i.e. N18 and low solvus high refractory (LSHR) superalloy, has been made in terms of the propagation rate and fractography observed under equivalent testing conditions. Temperatures of 650 and 725uC are compared for a trapezoidal dwell fatigue cycle (1– 20–1–1) in both air and vacuum at an R ratio of 0?1. It is found that coarse grained LSHR superalloy has better fatigue crack propagation resistance than fine grained N18 in vacuum, which is ascribed to its better creep performance. Oxidation causes significant degradation of fatigue performance of these two alloys, especially in the LSHR superalloy at higher temperature (725uC), resulting in its inferior fatigue performance compared with N18. In the LSHR superalloy, it seems that oxidation is the principal contributor to the deterioration of fatigue resistance. This is supported by observations of transgranular fracture in vacuum and intergranular fracture in air. In contrast, creep is a greater contributor to the deterioration in fatigue performance of N18 (as indicated by the intergranular failure modes observed in vacuum). An apparent activation energy analysis is able to provide further insight into the underlying mechanisms of fatigue crack propagation under creep–oxidation– fatigue conditions in these two alloys.