| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Microstructure Evolution and High Temperature Mechanical Performance of Laser Additively Manufactured Ferritic-Martensitic Steel |
| Author(s) |
Madhavan Radhakrishnan, Selvamurugan Palaniappan, Narendra B Dahotre |
| On-Site Speaker (Planned) |
Madhavan Radhakrishnan |
| Abstract Scope |
Ferritic-martensitic steels, with chromium content between 9 – 12 wt.%, are considered as promising materials for high temperature applications in power plants and nuclear reactors. In this work, laser powder bed fusion (LPBF) based additive manufacturing technique was employed to fabricate a 12% Cr containing ferritic martensitic steel. The fabricated alloys were austenitized and tempered to study the retention of delta ferrite and martensite evolution. Electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM) were employed to characterize the microstructures and identify the phases in as-fabricated and heat-treated alloys. Miniature tensile testing was performed up to 700⁰C to determine the mechanical performance of the alloys. The talk will present the phase evolution and temperature-dependent mechanical behavior as a function of heat treatment conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |