Projects / Programmes
High entropy alloys as a breakthrough in development of materials with advanced properties
| Code |
Science |
Field |
Subfield |
| 2.04.00 |
Engineering sciences and technologies |
Materials science and technology |
|
| Code |
Science |
Field |
| T150 |
Technological sciences |
Material technology |
| Code |
Science |
Field |
| 2.05 |
Engineering and Technology |
Materials engineering |
High-entropy alloys, advanced metallic materials, modelling, heat treatment, mechanical properties, creep resistance, wear resistance
Researchers (1)
| no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
| 1. |
31395 |
PhD Fevzi Kafexhiu |
Materials science and technology |
Head |
2018 - 2020 |
0 |
Organisations (1)
Abstract
Newly emerged high entropy alloys (HEA) are advanced metallic materials that exhibit a wide range of excellent mechanical and physical properties, such as high strength and toughness, high stiffness and improved oxidation resistance, etc. HEA are a mixture of five or more elements in equal molar proportion. The high mixing entropy of HEA generates potential for solid-solution simplified microstructures. While the high strength conventional metals and alloys rely mostly on the controlled distribution of a second phase, high entropy alloys properties are based on solid solution strengthening effect and the suppression of intermetallic phases. The multicomponent nature of HEA, the sluggish diffusion and severe lattice distortions have a significant effect on their capability to maintain high mechanical properties at high temperatures.
The aim of this project is to develop new- or optimize the existing HEA systems for use in automotive industry.
The proposed project develops on 24 months and contains activities grouped in three work packages: WP1 (months 1 - 8), WP2 (months 8 - 16), WP3 (months 16 - 24). The thermodynamic and kinetic data for different HEA systems as well as the first correlations composition-structure-targeted properties of the HEA systems will be implemented in the WP2 for the development of multi-scale models for the HEA with defined properties. Depending on the first inputs resulted from the modelling activities, the HEA systems initially selected can be adapted/modified in the common period of the two work packages. A strong interdependence exists also between the WP2 and the WP3: the multiscale models established in the WP2 for the HEA with defined proprieties, will be checked/validated through the synthesis in the WP3 and through the laboratory experiments; the technical/technological data resulted from first experiments in the WP3 will be used for improvement of the models achieved in the WP2.
Significance for science
Potential impact of the project’s results lies in:
Establishment of well-targeted materials design and processing concepts – project proposal deals with the design of new high entropy alloys with targeted applications with an emphasis on automotive industry. High-entropy alloys have great mechanical and oxidation properties designated to highly demanding applications. Due to the high number of elements and the lack of information regarding the structure of HEA, extensive work needs to be accomplished in the field of computational design to offer directions for future practical research in the field.
Increased competitiveness of the Slovenian industry by cost saving in materials design and processing and a shortened time-to-market for materials with advanced properties – high entropy alloys are advanced materials with great properties at high temperatures and are intended to replace well known superalloys in critical parts for several industrial fields: aeronautics, energy, automotive. Beside the fact that HEA do not contain critical elements, rather a higher amount of less expensive materials such as Al, Fe, Cu, Mn, replacing expensive Ni, Co, Cr Ru, Ta in superalloys, HEA are also easily recyclable and possess some superior properties. By the successful replacement of traditional alloys with HEA in the design and manufacturing, the Slovenian industry will receive a significant boost and time advantage in the utilization of newly emerged materials in various applications. The production of cost effective advanced materials with predictable properties by means of advanced experimental techniques represents a significant contribution to the Slovenian industry in general and beyond.
Significance for the country
Potential impact of the project’s results lies in:
Establishment of well-targeted materials design and processing concepts – project proposal deals with the design of new high entropy alloys with targeted applications with an emphasis on automotive industry. High-entropy alloys have great mechanical and oxidation properties designated to highly demanding applications. Due to the high number of elements and the lack of information regarding the structure of HEA, extensive work needs to be accomplished in the field of computational design to offer directions for future practical research in the field.
Increased competitiveness of the Slovenian industry by cost saving in materials design and processing and a shortened time-to-market for materials with advanced properties – high entropy alloys are advanced materials with great properties at high temperatures and are intended to replace well known superalloys in critical parts for several industrial fields: aeronautics, energy, automotive. Beside the fact that HEA do not contain critical elements, rather a higher amount of less expensive materials such as Al, Fe, Cu, Mn, replacing expensive Ni, Co, Cr Ru, Ta in superalloys, HEA are also easily recyclable and possess some superior properties. By the successful replacement of traditional alloys with HEA in the design and manufacturing, the Slovenian industry will receive a significant boost and time advantage in the utilization of newly emerged materials in various applications. The production of cost effective advanced materials with predictable properties by means of advanced experimental techniques represents a significant contribution to the Slovenian industry in general and beyond.
Most important scientific results
Final report
Most important socioeconomically and culturally relevant results
Final report
