Authors:
Hendric Schaefer (Ruhr-Universität Bochum, Lehrstuhl Werkstofftechnik, Germany)
Lukas Brackmann (Ruhr-Universität Bochum, Lehrstuhl Werkstofftechnik, Germany)
Sebastian Weber (Ruhr-Universität Bochum, Lehrstuhl Werkstofftechnik, Germany)
Jonathan Lentz (Ruhr-Universität Bochum, Lehrstuhl Werkstofftechnik, Germany)
Abstract:
The use of boron as a hard phase forming element in cold work tool steels can improve performance, price, and environmental considerations all at once. This is achieved by reducing costly and high footprint elements, avoiding retained austenite and thus simplifying heat treatment. However, in boron-alloyed tool steels the formation of boride networks during casting impairs the mechanical properties. This, in turn, makes the powder metallurgy (PM) route all the more interesting and important as well as effective in improving material properties. In this study, we present two innovative boron-alloyed PM tool steels that are atomized and consolidated by HIP. Microstructural analysis is performed using SEM, EBSD and XRD and dynamic mechanical properties are evaluated. The results show that a combination of cost reduction through reduced element content combined with the isotropic microstructure of the PM-HIP production route can be achieved while improving mechanical properties.
DOI:
https://doi.org/10.59499/EP256766866
