| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Aging Phenomena In A Compositionally Complex Two-Phase Low-Density Steel |
| Author(s) |
Cameron R. Hale, Michael Rupinen, Daniel Field |
| On-Site Speaker (Planned) |
Cameron R. Hale |
| Abstract Scope |
Wrought compositionally complex steel alloys show promise as high strength structural materials retaining toughness with reduced density. In this study, we examine two alloys with nominal composition of 20Mn – 10Al – (10, 5)Ni – 1C – bal. Fe (in wt. %). The effect of solutionizing temperature up to 1200 °C on grain size and phase stability is examined. Two solution temperatures were selected based on grain size and phase distribution for each alloy. Then, age hardening was performed at 500 to 600°C for up to 10,000 minutes. This research describes the effect of varying κ-carbide, BCC-β2, and austenite distributions on hardness and Charpy impact toughness. Evaluation of microstructure was performed with optical microscopy, x-ray diffraction, and scanning electron microscopy. Initial results showed key differences in the degree of precipitation strengthening as the lower Ni alloy achieved comparable hardness following aging, despite a lower starting hardness in the as-solutionized condition. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Phase Transformations |