3323. TAMMANN, G., AND BANDEL, G. [Heat Content and Specific Volume of Iron-Carbon Alloys.] Arch. Eisenhüttenw., vol. 7, 1934, pp. 571-578; chem. Abs., vol. 28, 1934, p. 4356. Literature on heat content, specific heat, and specific volume of Fe-C alloys and their changes in melting is compiled. Diagrams of state in 3 dimensions are constructed showing dependence of heat content and specific volume on C content and temperature. The γ-solid solutions must be considered, by their lattice parameters, as embedded solid solutions; the C atoms are situated between the lattice points, which are occupied only by Fe atoms, whereby the lattice is widened. The specific volume of Fe-C alloys 1,100°-1,650° increases slightly with C content. Pressure has little influence on the temperature of pearlite transformation. |