The relationships between microstructures and mechanical properties of heavy section ductile cast irons used in large scale wind turbines have been assessed in this study. In addition, the required conditions for meeting either the tensile property requirements (z10%) or the impact toughness requirements (z10%) of specification EN-GJS-400-18U-LT for heavy section ductile cast irons have been obtained. Furthermore, the optimal conditions in terms of microstructure (nodule count and pearlite content) and tensile properties for fully complying with specification EN-GJS-400-18-U-LT have been established and are summarised as follows: 112 mm 22 (NC (Nodule Count)(173 mm 22 , 3%(P (Pearlite)(6%, 407 MPa(TS (Tensile Strength)(438 MPa, El (Elongation)>16?2%. Please define 'NC', 'P', 'TS' and 'El.' at the first mention. In addition, the change in I 220uC value as a function of casting section thickness or casting modulus Mc 2 had been drawn. Finally, late inoculation can be considered a crucial and necessary step in melt treatments to attain satisfactory microstructures and hence to conform to the target specification.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.