| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
Sensitization of Alloy 800H Made by Laser Powder Bed Fusion |
| Author(s) |
Jingfan Yang, Xiang Liu, Miao Song, Lingfeng He, Bart Prorok, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
Jingfan Yang |
| Abstract Scope |
Alloy 800H has been widely used in many high temperature energy systems to provide strength and resistance to corrosion, oxidation, carburization. With high carbon content, Alloy 800H is known susceptible to grain boundary sensitization. The present research studies the sensitization behavior of the additively manufactured (AM) Alloy 800H made by laser powder bed fusion, with the particular focus on carbide formation kinetics in the laser fused non-equilibrium AM microstructure. The study covers a wide range of heat treatment conditions, not only to create a unique Time-Temperature-Sensitization diagram for AM alloy, but also to reveal the unique role of AM microstructure on the nucleation/growth of M23C6 and Cr depletion in the structure. Wrought 800H with and without cold work is also included in this study for comparison. The underlying mechanism of carbide evolution and Cr deplete in AM alloy will be discussed with the support of EBSD and high resolution TEM. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |