| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond V
|
| Presentation Title |
Controlling the Deformation Behavior of AlCoCrFeNi High-Entropy Alloy Additively Manufactured via Binder Jetting |
| Author(s) |
Olujide Oyerinde, Ioannis Mastorakos, Ajit Achuthan, Philip Yuya |
| On-Site Speaker (Planned) |
Olujide Oyerinde |
| Abstract Scope |
This study investigates the mechanical failure of the AlCoCrFeNi alloy - one of the most versatile high-entropy alloys (HEAs). The undesired granular failure, a significant barrier to the alloy's adoption, was probed using macro-indentation loading. Employing indentation loading provides insight into the alloy’s response under a more complex uniaxial loading system. The HEA was investigated in its as-printed state -- additively manufactured via the binder jetting production route. To control the deformation response/behavior, different heat-treatment temperatures were utilized. The aim is to understand the failure types after these different heat treatment steps. The study investigated the deformation mechanisms that characterize the HEA’s failure and possible ways to control the alloy's deformation. The study reveals how various isothermal heat treatments contribute to the alloy’s hardness and how subgranular nano-features aid in controlling the alloy’s deformation. The study gives insight into treatments that can help to resist catastrophic failure in this HEA. |