| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Austenite Formation and Decomposition V: A Symposium in Memory of Prof. Mats Hillert
|
| Presentation Title |
Phase Transformations in Additive Manufacturing of Tool Steels |
| Author(s) |
Ana Santana, Adriana Eres-Castellanos, Rosalia Rementeria, Jonathan D. Poplawsky, Carlos Capdevila, Francisca G. Caballero |
| On-Site Speaker (Planned) |
Francisca G. Caballero |
| Abstract Scope |
Additive manufacturing (AM) offers significant benefits to a wide range of industries, whether it is the ability for agile product customisation, functional integration, or rapid and cost-effective spare parts procurement. For steel components, laser powder bed fusion (LPBF) is regarded as the AM process most suitable to achieve complex functional parts capable for scaling on industrial level. Grade 300 maraging steels are widely used in AM and have shown a different resultant microstructure, as compared to the one obtained by conventional processing. This work aims for a better understanding of phase-transformation in additively manufactured tool steels during LPBF process and subsequent post-heat treatments. Phase formation during solidification and solid state are examined. The effect of cooling rates, thermal gradients, and thermal cycling during the AM processes are considered. Special attention is given to illustrate how the segregated composition during the solidification could affect the phase transformations. |