CORROSION BEHAVIOUR OF ANNEALED 42CrMo4 STEEL

In this paper, the corrosion behaviour of 42CrMo4 low-alloy steel after normalizing, soft annealing, spheroidizing annealing and full is investigated. for quenching tempering, one widely used studied steels due to its good combination mechanical properties. Sometimes, it in annealed condition. Nevertheless, properties are poorly studied, especially The main objective work increase knowledge about investigated alloy. microstructure samples different processes were characterised with hardness testing, optical scanning electron microscopy (SEM) X-ray diffraction (XRD). Measurements open-circuit potential potentiodynamic polarisation carried out a naturally aerated solution. It was found that rate higher than spherical samples. Moreover, resulted significant improvement resistance.