About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
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Presentation Title |
Fracture and Adhesion of Cold Sprayed HY80 Steel |
Author(s) |
Luke N. Brewer, Christopher M Roper, Anita Heczel |
On-Site Speaker (Planned) |
Luke N. Brewer |
Abstract Scope |
This talk describes the first mechanical behavior results for cold sprayed HY80 steel. While cold spray is now progressing well for additive repair of aluminum structures, the approach for high strength steels is just beginning. We have recently demonstrated the ability to successfully cold spray 4340 and HY80 steels using a combination of high pressure cold spray and laser assisted cold spray. We are now turning our attention to the mechanical behavior of these materials. In particular, we will be describing the ductility, impact fracture energy, and adhesion of HY80 steel deposits onto HY80 wrought material. The microstructure of cold sprayed steel resembles that of other cold sprayed material in that it is bimodal with highly deformed prior particle centers ringed with ultrafine-grained recrystallized grains. The ductility is controlled by a competition between stress concentrators produced by micro-porosity and micro-scale regions which lack metallurgical bonding between prior particles. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Iron and Steel, Surface Modification and Coatings |