About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
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| Presentation Title |
Densification and Microstructural Evolution of SS 316L Powders Hot Isostatically Pressed at Intermittent Temperatures and Pressures |
| Author(s) |
Pavan Ajjarapu, Fred List III, Subrato Sarkar, Jason Mayeur, Soumya Nag, Kevin Hanson, Ryan Dehoff |
| On-Site Speaker (Planned) |
Pavan Ajjarapu |
| Abstract Scope |
Powder metallurgy - hot isostatic pressing (PM-HIP) is a dynamic thermo-mechanical process that strives to fabricate near-net shaped (NNS) parts with presumably isotropic properties. While the primary objective of PM-HIP has been to achieve fully-dense components for industrial applications, it is quintessential to understand the mechanisms and process variables governing powder densification, can distortion, and microstructural evolution during the HIP cycle. To this effect, SS316L powders encapsulated in canisters of varying thicknesses were subjected to HIP cycles involving intermediate temperatures, pressures and soak times. Post-HIPed samples were characterized at different length scales to elucidate property-structure-processing (PSP) relationships as a function of canister thickness and HIP parameters. The results from this study illustrate the influence of individual process parameters and elucidate the significance of canister thickness in PM-HIP, thereby aiding metal part manufacturers and modelers to make informed decisions while designing PM-HIP cycles for large-scale NNS components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Shaping and Forming, Characterization |