EFFECT OF ALUMINUM ON STABILITY OF RETAINED AUSTENITE IN BAINITIC MALLEABLE CAST IRON

摘要

The effect of aluminum additives on the microstructure of bainitic malleable cast iron after heat treatment consisting of isothermal hardening at 350℃ in a bath with molten lead after a hold at 920℃ for 90 min is studied. A metallographic study is performed by the methods of light and scanning electron microscopy and x-ray diffraction analysis of the metal.