| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
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| Presentation Title |
Grain Structure Control Through Site Selective Exploitation of Recrystallisation Mechanisms in LPBF Ni-based Superalloys |
| Author(s) |
Katerina A. Christofidou, Elaine Livera, M Maguire, W. Philpott, G. Maddison, M. S. Luan Phan, Alexander Sloane, H Saunders, C. Atkinson, Iain Todd |
| On-Site Speaker (Planned) |
Katerina A. Christofidou |
| Abstract Scope |
Additive manufacturing offers a route towards spatial microstructural control, enabling the site-specific optimisation of component properties. Most commonly, spatially resolved control of manufacturing parameters is utilised to modify local solidification conditions towards microstructural optimisation. However, for Ni-based superalloys that often exhibit small process parameter windows, microstructural control through process parameter optimisation is more challenging. To that end, this work introduces preliminary work towards a novel method of creating multi-modal microstructures by exploiting recrystallisation mechanisms through a holistic approach of optimisation of manufacturing process parameters and hot isostatic pressing methodologies. Microstructural characterisation as well as mechanical properties will be presented towards understanding the effectiveness of the methodologies proposed and rationalisation of the observed performance. This work was supported by the UK Engineering and Physical Sciences Research Council [EP/S022635/1], the MAPP hub [EP/P006566/1] and the Royce Institute [EP/R00661X/1, EP/S019367/1, EP/P02470X/1 and EP/P025285/1]. |
| Proceedings Inclusion? |
Planned: |