Basêd on the Iron-carbon phase diagram describe; 1) the process in which the white cast iron is transformed to malleable cast iron. Also briefly describe the main differences in the mechanical properties of these two alloys. 2) the possible composition of alloys that result in the production of ferritic and pearlitic gray cast iron. Also briefly describe the main difference in the mechanical properties of these two alloys. (a) (b) 100 um Ledeburite in a white cast iron (Fe-4% C-0.3% Si 0.11% Mn 0.96% Cr) etched with 2% nital. (c) (p)

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Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing.