Electron microscopy investigation of the Cr-Mo-V cast steel

Purpose: Investigation of low alloy Cr–Mo–V cast steel after long – term operation and regenerative heat treatment. Design/methodology/approach: Micro structural investigations were carried out using transmission electron microscopy. Findings: The microstructure and carbide types after long – term operation and after regenerative heat treatment (including bainitic hardening with high tempering temperature) of Cr–Mo–V cast steel have been presented. Practical implications: : has been shown here is the influence of long term operation and regenerative heat treatment on the structure of Cr–Mo–V cast steel. Originality/value: The paper presents influence of regenerative heat treatment – bainitic hardening with tempering – on the structure of G21CrMoV4 – 6 (L21HMF) cast steel after long - term operation.