Metallurgical and Statistical Approaches to the Study of Cast Iron Street Furniture

Abstract The evolution of microstructure in relation to dating and nationality origin was investigated twenty-four cast iron objects street furniture produced between XIX XX centuries United Kingdom, France, Italy. Chemical composition the metalworks evaluated by glow-discharge optical emission spectrometry. Fragments from irons were analyzed microscopy scanning electron with energy-dispersive spectroscopy. Form, distribution, size graphite according standard EN ISO 945-1:2008. An image analysis software employed quantify area fraction matrix, major axis, shape factor lamellae, manganese sulfides ( ψ S ), steadite, number eutectic cells per unit. All data grouped linear discrimination (LDA) applied assess group assignment probability correct classification for each metalwork. results showed that microstructural features compatible those centuries. Values also suggested re-melting irons, associated recycling and/or steel scraps. high values steadite found are probably due excellent castability required complex castings these LDA multivariate allowed discriminate based on year manufacturing origin.