• Skrbek, Břetislav
• Petrzilkova, Michaela
• Kejzlar, Pavel
• Duchac, Alfred
• Myszka, Dawid
• Andrsova, Zuzana

Abstract

<jats:p>Austempered Ductile Irons is a promising material with a favorable combination of low price and good mechanical properties. It is produced by isothermal hardening of cast iron with nodular graphite. The heat treatment parameters directly influence the structure of the matrix. The structure consists of an ausferrite matrix - a mixture of epitaxial ferrite + residual austenite and graphite. The resulting mechanical properties depend on the proportion and morphology of the individual phases. Therefore, a thorough structural characterisation is needed to describe the influence of the heat treatment parameters. However, conventional methods such as optical microscopy do not provide sufficient accuracy. Therefore, this work used a very accurate EBSD method to evaluate the structure in the as-received state and after heat treatment.</jats:p>

Topics

• impedance spectroscopy
• morphology
• phase
• iron
• electron backscatter diffraction
• optical microscopy
• cast iron