Authors:
Karin Frisk (Innomat AB, Sweden)
Abstract:
Computational alloy design based on the CALPHAD approach involves physically based models and therefore successfully predicts properties of complex multicomponent metallic materials. When remelting metal powder by laser the effect of rapid solidification on microstructures often requires adjustments of composition, as compared to those of conventionally produced material, to reach adequate properties and avoid cracks. Searching for new compositions outside the common ranges of alloying elements, can benefit from using design criteria and data analysis. The design criteria can for example be hardenability, solidification ranges, corrosion resistance, precipitation hardening. The calculations provide the dataset to be analysed. A few examples of what is possible for Fe- and Al-based alloys, are given. The models, but also the background data, used for the calculations is critical, and this will be illustrated and discussed.
DOI:
https://doi.org/10.59499/WP225372044