Structural Metallic Systems For Advanced Gas Turbine Applications
Lead Research Organisation:
University of Sheffield
Department Name: Materials Science and Engineering
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
People |
ORCID iD |
| Panayiotis Tsakiropoulos (Principal Investigator) |
Publications
Dogan Ö
(2014)
Foreword Materials for High-Temperature Applications: Next Generation Superalloys and Beyond
in Metallurgical and Materials Transactions A
Ghadyani M
(2019)
Microstructures and Isothermal Oxidation of the Alumina Scale Forming Nb1.45Si2.7Ti2.25Al3.25Hf0.35 and Nb1.35Si2.3Ti2.3Al3.7Hf0.35 Alloys.
in Materials (Basel, Switzerland)
Ghadyani M
(2019)
Microstructures and Isothermal Oxidation of the Alumina Scale Forming Nb1.7Si2.4Ti2.4Al3Hf0.5 and Nb1.3Si2.4Ti2.4Al3.5Hf0.4 Alloys.
in Materials (Basel, Switzerland)
Grammenos I
(2011)
Study of the role of Hf, Mo and W additions in the microstructure of Nb-20Si silicide based alloys
in Intermetallics
Hernández-Negrete O
(2019)
On the Microstructure and Isothermal Oxidation at 800, 1200, and 1300 °C of the Al-25.5Nb-6Cr-0.5Hf (at %) Alloy.
in Materials (Basel, Switzerland)
Hernández-Negrete O
(2019)
On the Microstructure and Isothermal Oxidation of Silica and Alumina Scale Forming Si-23Fe-15Cr-15Ti-1Nb and Si-25Nb-5Al-5Cr-5Ti (at.%) Silicide Alloys.
in Materials (Basel, Switzerland)
Hernández-Negrete O
(2020)
On the Microstructure and Isothermal Oxidation at 800 and 1200 °C of the Nb-24Ti-18Si-5Al-5Cr-5Ge-5Sn (at.%) Silicide-Based Alloy.
in Materials (Basel, Switzerland)
Hernández-Negrete O
(2019)
On the Microstructure and Isothermal Oxidation of the Si-22Fe-12Cr-12Al-10Ti-5Nb (at.%) Alloy.
in Materials (Basel, Switzerland)
Li Z
(2019)
The Effect of Ge Addition on the Oxidation of Nb-24Ti-18Si Silicide Based Alloys.
in Materials (Basel, Switzerland)
Li Z
(2019)
On The Microstructures and Hardness of The Nb-24Ti-18Si-5Al-5Cr-5Ge and Nb-24Ti-18Si-5Al-5Cr-5Ge-5Hf (at.%) Silicide Based Alloys.
in Materials (Basel, Switzerland)
Li Z
(2011)
The Effect of Ge and Ti Additions on the Microstructures and Properties of Nb-18Si Based Alloys
in MRS Proceedings
Li Z
(2013)
The microstructures of Nb-18Si-5Ge-5Al and Nb-24Ti-18Si-5Ge-5Al in situ composites
in Journal of Alloys and Compounds
McCaughey C
(2018)
Type of Primary Nb5Si3 and Precipitation of Nbss in aNb5Si3 in a Nb-8.3Ti-21.1Si-5.4Mo-4W-0.7Hf (at.%) Near Eutectic Nb-Silicide-Based Alloy.
in Materials (Basel, Switzerland)
Nelson J
(2018)
A Study of the Effects of Al, Cr, Hf, and Ti Additions on the Microstructure and Oxidation of Nb-24Ti-18Si Silicide Based Alloys.
in Materials (Basel, Switzerland)
Papadimitriou I
(2014)
Ab Initio Study of Binary and Ternary Nb3(X,Y) A15 Intermetallic Phases (X,Y = Al, Ge, Si, Sn)
in Metallurgical and Materials Transactions A
Papadimitriou I
(2019)
Ab Initio Study of Ternary W5Si3 Type TM5Sn2X Compounds (TM = Nb, Ti and X = Al, Si).
in Materials (Basel, Switzerland)
Papadimitriou I
(2014)
Ab initio study of the intermetallics in Nb-Si binary system
in Intermetallics
Papadimitriou I
(2019)
Phase Equilibria in the Nb-Rich Region of Al-Nb-Sn at 900 and 1200 °C.
in Materials (Basel, Switzerland)
Papadimitriou I
(2015)
Ab initio investigation of the intermetallics in the Nb-Sn binary system
in Acta Materialia
Papadimitriou I
(2015)
On the Nb-Ge Binary System
in Metallurgical and Materials Transactions A
Papadimitriou I
(2015)
Ab initio investigation of the Nb-Al system
in Computational Materials Science
Papadimitriou I
(2017)
The impact of Ti and temperature on the stability of Nb5Si3 phases: a first-principles study.
in Science and technology of advanced materials
Thandorn T
(2021)
On the Microstructure and Properties of Nb-Ti-Cr-Al-B-Si-X (X = Hf, Sn, Ta) Refractory Complex Concentrated Alloys.
in Materials (Basel, Switzerland)
Thandorn T
(2021)
The Effect of Boron on the Microstructure and Properties of Refractory Metal Intermetallic Composites (RM(Nb)ICs) Based on Nb-24Ti-xSi (x = 16, 17 or 18 at.%) with Additions of Al, Cr or Mo.
in Materials (Basel, Switzerland)
Tsakiropoulos P
(2022)
Alloys for application at ultra-high temperatures: Nb-silicide in situ composites
in Progress in Materials Science
Tsakiropoulos P
(2022)
Refractory Metal Intermetallic Composites, High-Entropy Alloys, and Complex Concentrated Alloys: A Route to Selecting Substrate Alloys and Bond Coat Alloys for Environmental Coatings.
in Materials (Basel, Switzerland)
Tsakiropoulos P
(2017)
On the Nb silicide based alloys: Part I - The bcc Nb solid solution
in Journal of Alloys and Compounds
Tsakiropoulos P
(2018)
Alloying and Hardness of Eutectics with Nbss and Nb5Si3 in Nb-silicide Based Alloys.
in Materials (Basel, Switzerland)
Tsakiropoulos P
(2018)
On Nb silicide based alloys: Part II
in Journal of Alloys and Compounds
Tsakiropoulos P
(2018)
On Nb Silicide Based Alloys: Alloy Design and Selection
in Materials
Tsakiropoulos P
(2021)
Refractory Metal (Nb) Intermetallic Composites, High Entropy Alloys, Complex Concentrated Alloys and the Alloy Design Methodology NICE-Mise-en-scène † Patterns of Thought and Progress.
in Materials (Basel, Switzerland)
Tsakiropoulos P
(2018)
Alloying and Properties of C14-NbCr2 and A15-Nb3X (X = Al, Ge, Si, Sn) in Nb-Silicide-Based Alloys.
in Materials (Basel, Switzerland)
Tsakiropoulos P
(2014)
On the macrosegregation of silicon in niobium silicide based alloys
in Intermetallics
Tsakiropoulos P
(2023)
On the Nb5Si3 Silicide in Metallic Ultra-High Temperature Materials
in Metals
Tsakiropoulos P
(2018)
On the Alloying and Properties of Tetragonal Nb5Si3 in Nb-Silicide Based Alloys.
in Materials (Basel, Switzerland)
Utton C
(2017)
Experimental and thermodynamic assessment of the Ge-Nb-Si ternary phase diagram
in Journal of Alloys and Compounds
Vellios N
(2022)
The Effect of Fe Addition in the RM(Nb)IC Alloy Nb-30Ti-10Si-2Al-5Cr-3Fe-5Sn-2Hf (at.%) on Its Microstructure, Complex Concentrated and High Entropy Phases, Pest Oxidation, Strength and Contamination with Oxygen, and a Comparison with Other RM(Nb)ICs, Refractory Complex Concentrated Alloys (RCCAs) and Refractory High Entropy Alloys (RHEAs).
in Materials (Basel, Switzerland)
Xu Z
(2018)
A Study of the Effect of 2 at.% Sn on the Microstructure and Isothermal Oxidation at 800 and 1200 °C of Nb-24Ti-18Si-Based Alloys with Al and/or Cr Additions.
in Materials (Basel, Switzerland)
Xu Z
(2020)
A Study of the Effect of 5 at.% Sn on the Micro-Structure and Isothermal Oxidation at 800 and 1200 °C of Nb-24Ti-18Si Based Alloys with Al and/or Cr Additions.
in Materials (Basel, Switzerland)
Zhao J
(2020)
On the Microstructure and Properties of Nb-12Ti-18Si-6Ta-5Al-5Cr-2.5W-1Hf (at.%) Silicide-Based Alloys with Ge and Sn Additions.
in Materials (Basel, Switzerland)
Zhao J
(2020)
On the Microstructure and Properties of Nb-18Si-6Mo-5Al-5Cr-2.5W-1Hf Nb-Silicide Based Alloys with Ge, Sn and Ti Additions (at.%).
in Materials (Basel, Switzerland)
| Description | Aero-engine manufacturers are looking for new materials for the high pressure turbines of next generation aero-engines, known as the "beyond the Ni superalloys era". We have developed new alloys that are much closer to the property goals for toughness, oxidation and creep compared with previous generations of developmental alloys. A new methodology for designing ultra-high temperature alloys has been developed. |
| Exploitation Route | New materials in developmental aero engines Possibility of patent(s) is explored |
| Sectors | Aerospace, Defence and Marine,Energy,Transport,Other |
| Description | Research funding by the EPSRC via the partnership with Rolls Royce has been extended for another 5 years period |
| Sector | Aerospace, Defence and Marine,Energy |
| Impact Types | Societal,Economic |
| Description | Beyond Ni superalloys |
| Geographic Reach | National |
| Policy Influence Type | Participation in a guidance/advisory committee |
| Title | refractory metal intermetallic alloy design methodology |
| Description | New approach to designing RMICS (refrcatory metal intermetallic composites) |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2017 |
| Provided To Others? | No |
| Impact | New alloys can be designed against industry set property goals for creep, oxidation and toughness |
| Title | Nb alloys data base |
| Description | data base for developing Nb silicide based alloys |
| Type Of Material | Database/Collection of data |
| Year Produced | 2017 |
| Provided To Others? | No |
| Impact | New alloys can be designed to meet property goals set by industry |
| Description | Solidification processing of refractory metal alloys |
| Organisation | Rolls Royce Group Plc |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Materials for OFZ processing and analysis of data |
| Collaborator Contribution | OFZ facility |
| Impact | PhD thesis when research is completed |
| Start Year | 2014 |
| Description | Solidification processing of refractory metal alloys |
| Organisation | Timet UK Ltd |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Selected alloys have been recommended for procesing |
| Collaborator Contribution | exploratory R&D for processing and scaling up production of new alloys |
| Impact | exploratory experiments are currently in progress |
| Start Year | 2017 |
| Description | Ultra-high temperature alloys |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Industry/Business |
| Results and Impact | Current world-wide R&D on ultra-high tremperature alloys was discussed with aeroengine manufacturer |
| Year(s) Of Engagement Activity | 2017 |