|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Microstructural Evolution and Nanoprecipitation Behaviour of a Selective Laser Melted, 18% Ni Maraging 300 Steel
||Gopi Kompelli, Angelos Nikolaidis, David de Castro, Adriana Eres Castellanos, Isaac Toda Caraballo, David San Martin, Jose Antonio Jimenez, Esteban Urones Garrote, Rosalia Rementeria, Carlos Capdevila, Francisca G. Caballero
|On-Site Speaker (Planned)
||Francisca G. Caballero
Maraging steels are widely applied in the aerospace and tool-manufacturing industries, which often call for geometrically complex components with excellent mechanical properties in relatively small quantities. Compared with other Fe-based alloys, such as 316L stainless steels, Fe-Al steels, and tooling steels, maraging steels are well suited for Selective Laser Melting (SLM), an additive manufacturing method specially developed for 3D printing of metal alloys.
It is well known that maraging steels can be age-hardened by intermetallic precipitates. To enhance the progress of this technology, it is necessary to study the precipitation behaviour of SLM maraging steels during age hardening. In this work, microstructural characterization of maraging steels produced by SLM was carried out, paying special attention to the multi-scale complexity and the crystallographic hierarchy of as-built martensitic structures. In addition, X-ray diffraction and high-resolution TEM (HRTEM) analysis were conducted to investigate microstructure evolution and precipitation events during ageing of SLM specimens.
||Iron and Steel, Additive Manufacturing, Phase Transformations