ANDRŠOVÁ Zuzana Technická univerzita v Liberci

Spoluautoři Skrbek, B., Sejnohova, I.

Austempered Ductile Iron (ADI) and Austempered Gray Iron are the most progressive group of graphitic irons in terms of the mechanical properties. The matrix of ADI/AGI is bainite-like, composed of ferrite needles and of residual austenite (up to 40 %) which is oversaturated by carbon. By a suitably chosen plastic deformation (shot peening, rolling, gear mesh) is in the surface induced the martensitic transformation of the residual austenite. This paper deals with the conditions needed for this transformation on specific materials. It is a part of the work, which results should support the production of this very progressive material in the Czech Republic.