About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Effect of Post Deposition Heat Treatment on the Microstructural Evolution and Mechanical Properties of GRCop-42 and HR-1 Cold Spray Deposits |
Author(s) |
Bharat K. Jasthi, Venkata Kandadai, Terrence Kuca, Marius Ellingsen, Todd Curtis |
On-Site Speaker (Planned) |
Bharat K. Jasthi |
Abstract Scope |
The main objective of this work was to investigate the effect of post deposition heat treatment on the microstructural evolution and mechanical properties of GRCop-42 and HR-1 cold spray deposits. GRCop-42 powder blended with varying proportions of HR-1 powder (0, 15, 25, 50, 75, 85 and 100 wt.%) were cold spray deposited. The blends were motivated by the desire for gradual transitions between the two materials to eliminate stress concentrations that arise at joints between materials of differing coefficients of thermal expansion. The deposits were characterized using optical and scanning electron microscopy. Post-deposition heat treatment resulted in a recrystallized and refined microstructure in the cold spray deposits. However, coarsening of Cr2Nb precipitates in GRCop-42 deposits and precipitation of η phase in HR-1 deposits was observed with post deposition heat treatment. Post deposition heat treatment resulted in significant improvement in ductility and tensile strengths for both GRCop-42 and HR-1 deposits. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Powder Materials, Characterization |