About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation and Damage Mechanisms of High Temperature Alloys
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Presentation Title |
Machining-induced Microstructural Deformation and Grain Refinement of Ni-base Superalloys under Controlled Thermal Conditions |
Author(s) |
Andrea la Monaca, Dragos A. Axinte, Zhirong Liao, Rachid M'Saoubi, Mark C. Hardy |
On-Site Speaker (Planned) |
Andrea la Monaca |
Abstract Scope |
When machining Ni-base superalloys for safety-critical applications, excellent levels of microstructural surface integrity are to be achieved to ensure in-service part performance. In fact, machining processes can locally generate severe thermo-mechanical conditions, which may induce microstructural distortion in the near-surface region and submicron grain refinement in the most severe cases. Thus, significant research effort is focused on understanding the mechanisms of machining-induced microstructural deformation in these materials. In this context, a new method has been developed to investigate the machining-induced surface deformation of heat-resistant superalloys under controlled thermal conditions. In synergy with in-situ process monitoring, this approach has been employed to understand the role of thermal effects on the machinability and surface integrity of Ni-base superalloys. Thus, this discloses the interplay between the temperature-dependent behaviour of Ni-base superalloys and their microstructural surface deformation mechanisms in mechanical machining, effectively supporting the development of next-generation Ni-base superalloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Process Technology, Surface Modification and Coatings |