60 & 61 - Effect of Cobalt in Thin Wall Ductile Iron and Solid Solution Strengthened Ferritic Ductil

Abstract:

60 & 61 - Effect of Cobalt in Thin Wall Ductile Iron and Solid Solution Strengthened Ferritic Ductile Iron

Ductile Iron is a material that is constantly evolving. Consequently, the ferrous industry is not only focusing on lightweighting but also on improving the impact strength and fracture toughness of typical ferritic-pearlitic ductile iron grades and solid solution strengthened ferritic ductile irons. Recently, the demand for thin-wall ductile iron and solid solution strengthened ferritic ductile iron grades has increased. The challenges behind the fabrication of these two ductile iron materials are the presence of carbides and the embrittlement of ferrite. In response, research has been focused on looking at alternative methods that can mitigate carbide formation in thin sections and counteract the detrimental effects of high silicon contents in the impact toughness of these materials.