Abstract
OF the papers submitted to the iron and steel Institute at its recent meeting on sept. 20-22 in Glasgow, one at any rate stands out as a contridution of far more than usual interest. Carbon may exist in the unhardened irons and steels in the free state, in allprobability as graphite, or combined with the iron as the carbide Fe3C. In the steels the latter form is almost invariably the one present, while in the grey irons it is graphite. The relationship of these two forms has been by no means cleared up, though in general it has been assumed that in the stable condition the solid material would contain the carbon in the graphitic form, the carbide being a meta-stable constituent. This is represented in thermal equilibrium diagrams by super- posing the one for the graphitic metal upon that for alloys containing carbide.
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T., F. A New Theory of the Cast Irons. Nature 120, 857–858 (1927). https://doi.org/10.1038/120857a0
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DOI: https://doi.org/10.1038/120857a0