| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development III -- Super Materials and Extreme Environments
|
| Presentation Title |
Design and Additive Manufacturing of Hastelloy C22 for Corrosive Environment |
| Author(s) |
Somayeh Pasebani, Dongqing Yan , Alireza Torbati-Sarraf, Behrang Poorganji , Osman Ertorer, O Burkan Isgor |
| On-Site Speaker (Planned) |
Somayeh Pasebani |
| Abstract Scope |
A Hastelloy C22 powder with the chemical composition of Ni-21.30Cr-13.36Mo-1.92Co-2.94W-3.85Fe-0.23Mn-0.3V(wt%) and particle size distribution of D10=23.8±0.3 μm, D50=37.5±0.2μm and D90=59.3±1.1 μm was used as a feedstock in a laser powder bed fusion process. Laser power, scanning speed, and layer thickness was varied in a nitrogen atmosphere. Optimization of the process led to the highest density and the lowest surface roughness. Following the optimization, the samples were heat-treated in nitrogen environment to obtain the required microstructure and mechanical properties. Chemical composition and/or post-laser fusion heat treatment were designed in the additive manufacturing process to achieve the required mechanical properties and corrosion resistance. Furthermore, electrochemical tests were conducted to assess the corrosion performance of the additively manufactured samples in selected corrosive environments. Microstructure, mechanical properties, and corrosion resistance of the additively manufactured samples are benchmarked against conventionally manufactured Hastelloy C22 specimens. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Powder Materials |