The application of a quasichemical solid solution model to carbon austenite
- 113 Downloads
The recent extensive data for the variation with temperature and composition of the activity of carbon in austenite has been analyzed using a quasichemical model for interstitial solid solutions. The most important parameter in the theoretical activity equation is the pairwise binding energy Δε between two nearest-neighbor solute atoms. A computer fitting method has shown that the new activity data for austenite, which spans a temperature range from 900° to 1400°C and compositions ranging from very dilute up to the limiting composition of the phase boundary, are compatible with the theoretical model with a Δε-value of -2 kcals per mole which is independent of both temperature and composition.
KeywordsAustenite Metallurgical Transaction Solute Atom Interstitial Solid Solution Octahedral Interstitial Site
Unable to display preview. Download preview PDF.
- 2.S. Ban-ya, J. F. Elliott, and J. Chipman:Trans. TMS-AIME, 1969, vol. 245, pp.1199–1206.Google Scholar
- 3.S. Ban-ya, J. F. Elliott, and J. Chipman:Met. Trans., 1970, vol. 1, pp. 1313–20.Google Scholar
- 4.F. D. Rossini, D. D. Wagman, W. H. Evans, S. Levine, and I. Jaffee: Nat. Bur. Std. (U.S.), Circ. No. 500, pt. 1,1961.Google Scholar
- 5.K. K. Kelley: Bur. Mines Bull., 1960, vol. 584.Google Scholar
- 6.R. B. McLellan:Trans. TMS-AIME, 1965, vol. 233, pp. 1664–70.Google Scholar
- 9.R. B. McLellan, M. L. Rudee, and T. Ishibachi:Trans. TMS-AIME, 1965, vol.233, pp. 1938–43.Google Scholar
- 10.H. Sehende and H. Kaiser:Arch. Eisenhuettenw., 1960, vol. 31, pp. 227–32.Google Scholar