About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Materials Science
|
| Presentation Title |
Thermal-treatment optimization under hydrogen combustion to prevent oxidation in high-performance steels |
| Author(s) |
Carola Celada Casero, Raquel Sánchez, Alejandro Barrios, Joaquín Otón, Silvia Molas Busquets, Francisca García Caballero |
| On-Site Speaker (Planned) |
Carola Celada Casero |
| Abstract Scope |
Thermal processing is essential for developing the microstructure and mechanical properties of high-performance steels. Although hydrogen combustion offers a sustainable alternative to conventional heat-treatment technologies, the high water-vapor content of oxy-hydrogen flames may accelerate the steel surface oxidation. This study investigates the interplay between hydrogen-based heat-treatment parameters, microstructural evolution, and oxidation in additively manufactured commercial tool steels. Thermochemical simulations using FactSage 8.4 were employed to predict phase evolution and oxide formation, guiding the design of experimental heat treatments. Steel specimens were processed under controlled H2/H2O atmospheres and varying temperature–time profiles in a vertical tube furnace. The microstructure, carbide and oxide phases, their chemical state, and the local mechanical properties were analysed using SEM-EDX, XRD, microhardness mapping and X-ray absorption spectroscopy (XAS). The obtained relationships between heat-treatment, carbide and oxide evolution, and steel performance will support the optimization of hydrogen-fueled thermal processing for high-performance steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Phase Transformations, Additive Manufacturing |