High Entropy Alloys for Gas Turbine Applications
Lead Research Organisation:
University of Cambridge
Department Name: Materials Science & Metallurgy
Abstract
High Entropy Alloys are compositionally complex materials, typically containing five or more principal elements in approximately equal atomic ratios. Whilst much of the literature surrounding these materials has been based on combinations of first row transition metal elements, recent publications have identified alloys with promising high-temperature properties based on the refractory metals. Development of these alloys into commercially viable engineering materials requires a detailed understanding of their phase metallurgy, elemental partitioning and information pertaining to the influence of other alloying additions. This project aims to provide such information by establishing the phase equilibria in systematic series of multi-component refractory metal alloys at a number of different elevated temperatures.
People |
ORCID iD |
| Nicholas Gwilym Jones (Primary Supervisor) | |
| Tamsin Whitfield (Student) |
Studentship Projects
| Project Reference | Relationship | Related To | Start | End | Student Name |
|---|---|---|---|---|---|
| EP/N509590/1 | 01/10/2016 | 30/09/2021 | |||
| 1793446 | Studentship | EP/N509590/1 | 01/10/2016 | 30/09/2020 | Tamsin Whitfield |
| Description | Understanding the role of the elements present in potential new alloys which may have the possibility to replace the nickel based superalloys in aeroengines. The project has worked out which elements are key in driving the structure formed and the element responsible for order hardening thought to be particularly beneficial for high temperature strength. This should offer possibilities for inverting to give better mechanical properties by changing the composition, but raises potential issues of long term microstructural stability, and whether the temperature at which the strengthening phase is present will be sufficient to convey the necessary strength for the desired applications. |
| Exploitation Route | Continued research within project looking to develop new materials for high temperature service, to alloy more efficient transport solutions particularly in the aerospace sector where reducing CO2 emissions is paramount. This work has been undertaken with Rolls Royce plc. and AFRL, who are using the results to inform possible development of new materials for use in aeroengines. |
| Sectors | Aerospace, Defence and Marine,Manufacturing, including Industrial Biotechology,Transport |
| Description | Characterisation of Refractory metal alloys |
| Organisation | University of Manchester |
| Department | School of Materials Manchester |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Preparation of samples and analysis of data |
| Collaborator Contribution | TEM imaging, diffraction and dark field |
| Impact | Work in progress |
| Start Year | 2018 |
| Description | Long duration stability of refractory metal high entropy alloys |
| Organisation | Air Force Research Laboratory |
| Department | Materials and Manufacturing Directorate |
| Country | United States |
| Sector | Public |
| PI Contribution | Long duration heat treatments on a range of state of the art refractory metal high entropy alloys and subsequent analysis. |
| Collaborator Contribution | Production of the material and preliminary data for testing. |
| Impact | Work currently in progress |
| Start Year | 2018 |