RWTH Aachen University
Due to the complex laser-material interactions, the development of alloys specifically suited for AM is a challenging task. The integration of multi-scale, multi-physics experimental and computational methods, i.e. Integrated Computational Materials Engineering (ICME), in alloy design for AM is a promising approach to address this issue. Furthermore, ICME-based design provides a sustainable path towards alloy development compared with traditional trial-and-error-based approaches.
Towards the development of novel high-performance alloys with superior operation temperature, creep and corrosion performance, etc., oxide-dispersoid strengthened (ODS) alloys manufactured via AM present a promising opportunity for novel components (e.g., gas burner heads). This presentation emphasizes the use of an ICME framework for the accelerated development of novel ODS alloys, highlighting the key Process-Structure-Properties-Performance relationships, by the application of multiple ICME tools. A Finite-element (FE) model supported with material properties from Thermo-Calc presents the AM processing characteristics integrated into the phase-field software MICRESS® and python to understand the process-structure relationship. It is further extended to the properties & performance through creep, tensile modelling and FE analysis. Thus, the entire manufacturing chain and the final product's performance when in service are described through closed and complete simulations. Finally, by combining these material models at multiple scales a novel ODS alloy design framework is developed. The developed relationships as well as the robustness of the presented ICME approach will be critically discussed.
Abstract
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