| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Numerical and Experimental Exploration of CCAs from the CrFeNiMoTi System for the Development of Cobalt-free Hardfacing Coatings |
| Author(s) |
Clément Vary, Pascal Aubry, Ivan Guillot |
| On-Site Speaker (Planned) |
Pascal Aubry |
| Abstract Scope |
This work’s purpose is to propose viable substitutes to the cobalt-based Stellite alloys, commonly used as wear-resistant coatings. Investigations revolve around Complex Concentrated Alloys (CCAs) from the CrFeNiMoTi system, for the coating of stainless steel pieces that need lasting protection from dry-sliding contact sollicitations. Previous work evidenced the (CrFeNi)90Mo5Ti5 alloy as a promising base, which mostly relies on the formation of a sigma phase within an FCC matrix for an increased hardness and an improved tribological behaviour. In this particular framework, the in situ alloying capabilities of the DED (Direct Energy Deposition) process were used for further explorations around this composition. This additive manufacturing technique is perfectly adapted to tackle the two main challenges: making directly functioning coatings and implementing rapid-screening strategies to broadly explore multi-principal elements systems. Coupled with a high-throughput use of the CALPHAD method, this combinatorial strategy speeds up material development compared to the more conventional ways. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Additive Manufacturing, High-Entropy Alloys |