| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Composition-Tunable Shrinkage for Ferrous Sintering Setters and Inserts |
| Author(s) |
Sajad Shirzad, Osama Habbal, Pravansu Mohanty, Christopher Pannier |
| On-Site Speaker (Planned) |
Sajad Shirzad |
| Abstract Scope |
Tunable shrinkage is a novel sintering concept that allows for controlled shrinkage of a sacrificial green part by varying its composition. This can be used to apply mechanical stress by sintering setters and inserts to aid in the successful sintering of a more valuable material. We used the system of carbothermal reduction of iron oxide (Fe3O4) powder to sponge iron to measure the correlation between composition and shrinkage for a vacuum furnace sintering cycle. We then demonstrated composition-tunable shrinkage for the same cycle. We used bound powder paste extrusion 3D printing to form the sacrificial green parts. The compositional change was in the concentration of the reducing agent graphite. We found that carbon-limited incomplete reduction gave less shrinkage. After calibration, the tuned composition was used in a sintering setter to support the sintering of a stainless steel 316L green part. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Powder Materials |