The lattice parameters of cementite extracted from Fe-C and Fe-C-Si alloys after water-quenching from various temperatures between 600 and 1000°C were measured. An increase in quenching temperature reduced the a and b parameters and increased the c parameter of these alloys. The variation in the parameters with Si content became less at a lower quenching temperature. On the basis of electron microprobe analysis and Curie temperature measurement of cementite, the effect of Si on the lattice parameters was found to be caused by an increased carbon concentration of cementite which resulted from increased silicon concentration in austenite but not in cementite.
Get full access to this article
View all access options for this article.
References
1.
SATOT. and NISHIZAWAT.: J. Japan Inst. Metals, 1956, 20, 340.
2.
SATOT., KANEKOH., and NISHIZAWAT.: ibid., 1955, 19,445.
3.
HULTGRENA. and KUOK.: J. Iron Steel Inst., 1952, 170, 240.
4.
WITTMOSERA. and GRASW.-D.: Giesserei, 1963, 15, 75.
5.
FORESTR. D., HEWAIDYI. F., and KoNDIcV.: AFS Cast Metals Research J., 1968, 4, 190.
6.
IGARASHII., OHIRAG., and HORIGOMET. J. Japan Inst. Metals, 1950, 14–B, 23.
7.
OWENW. S.: J. Iron Steel Inst., 1951, 167,117;
8.
PEARCEK. and EVANSP. E.: ibid., 1966,204,388.
9.
ASHTONM. C. and NEWALLR. H.: Metallography, 1971, 4, 359.
