Austempered ductile iron (ADI) is a new engineering material type which continue receiving increased attention in research and industry. Extensive conducted so far has demonstrated that ADI excellent property combination such as high strength-weight ratio, ductility toughness, good fatigue strength, damping properties wear resistance. As result of to their exceptional mechanical mix, fabricatio...

The microstructure of HP stainless steel in aged and aged + solution annealed conditions and solutionized alloy 800 was characterized by optical microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) equipped by EDS. All phases present in the above condition were described. The effects of solution annealing heat treatment temperature on the microstructure, te...

G. Paraschiv, Department of Biotechnical Systems, Biotechnical Systems Engineering Faculty, Polytehnic University of Bucharest, Romania D. Dobrotă, Department of Engineering and Management of Technological Systems, Engineering Faculty, University “Constantin Brâncuşi” Târgu-Jiu, Romania Metal structures of the mining equipment are made of a steel with good weldability and mechanical characteris...

Cast iron (CI) is one of the oldest materials in commercial use. It has excellent compressive strength and is commonly used for structures that require this property, as well as for water and sewer lines. This article explains CI metallurgy and why the understanding of this metallurgy is key to understanding other ferrous materials and alloys. The composition of cast iron (CI) varies significan...

Creep resistant alloys designed for power plant applications like thick section boiler components, steam lines, turbine rotors and turbine castings must be reliable over long periods of time in sever environments. Besides high creep strength these materials must exhibit also other properties, i.e. good corrosion and crack resistance as well as good weldability. The environmental impact and econ...