This work deals with the feasibility of obtaining Austempered Ductile Iron with Dual Phase structures (DPADI) through heat treatment, starting from different as-cast microstructures. The mechanical properties on these microstructures were evaluated. DPADI microstructures were obtained by adding different tenors of silicon (2.4% to 4.2%) to the melts and keeping the other alloying elements const...

Abstract In this research, ultrasonic melt treatment (UST) was used to produce a new ultrafine grade of spheroidal graphite cast iron (SG iron) and austempered ductile (ADI) alloys. Ultrasonic numerically simulated evaluated based on acoustic wave streaming. The simulation results revealed that the streaming waves propagated as stream jet in molten SG along centerline source (sonotrode) with ma...

The experience of the Physico-technical Institute (PhTI) National Acdemy Sciences Belarus in harmonization international standard ISO 17804 (Founding – Ausferritic spheroidal graphite cast irons Classification) and development Belorussian analogue STB is described. reasons for choice austempered ductile iron (ADI) as an object are presented: it most promising comparison with gray classical iron...

The corrosion behavior of austempered ductile iron (ADI) under cyclic salt spray exposure was studied using a specific three-electrode cell located in the fog chamber. Three steps were identified, namely pitting ferrite (very first cycles), followed by inward oxidation ausferrite matrix and then (iii) mixed associated with formation rust layer at specimen surface. Evolution rate calculated from...