Abstract
Crystallization behaviour of amorphous Fe80(C1−x B x )20 alloys, obtained by splat-cooling technique, for x values ranging from zero to unity has been investigated mainly by transmission electron microscopy. The crystalline phase which first appeared in the amorphous matrix was α-Fe for all alloys studied. However, the morphology of α-Fe phase changed from a spherical shape for low x values to a watch-glass shape for intermediate x values and to dendritic for large x values. The nucleation of α-Fe crystals was homogeneous for low x samples while preferred nucleation on edges and surfaces was noted for samples with higher x values. The final volume fraction of α-Fe phase before the appearance of the second crystalline phase increased with the increase in x.
Similar content being viewed by others
References
M. G. Scott, “Rapidly Quenched Metals III”, edited by B. Cantor, Vol. 1 (The Metals Society, London, 1978) p. 198.
E. Hornbogen and I. Schmidt, ibid“, p. 261.
U. Herold and U. Köster, ibid“, p. 281.
A. L. Greer and J. A. Leake, ibid“, p. 299.
J. L. Walter and S. F. Bartram, ibid“, p. 307.
A. S. Schaafsma, H. Snijders and F. Van Der Woude, ibid“, p. 428.
F. E. Luborsky, Mater. Sci. Eng. 28 (1977) 139.
J. L. Walter, S. F. Bartram and R. R. Russell, Met. Trans. A. 9A (1978) 803.
P. H. Shingu, K. Kobayashi, K. Shimomura and R. Ozaki, Scripta Met. 8 (1974) 1317.
JCPDS International Centre for Diffraction Data, Powder Diffraction File, No. 6-0696; H. E. Swanson et al., NBS Circular 539, Vol. IV (1955) p. 3.
P. H. Shingu, K. Shimomura, K. Kobayashi and R. Ozai, Mater. Sci. Eng. 23 (1976) 183.
P. H. Shingu, K. Shimomura, R. Ozaki, K. Osamura and Y. Murakami, “Rapidly Quenched Metals III”, edited by B. Cantor, Vol. 1 (The Metals Society, London, 1978) p. 315.
R. Ray and R. Hasegawa, Sol. Stat. Commun. 27 (1978) 471.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Shimomura, K., Shingu, P.H. & Ozaki, R. The morphology of α-Fe crystals which grow in the amorphous Fe80(C1−xBx)20 alloys. J Mater Sci 15, 1175–1182 (1980). https://doi.org/10.1007/BF00551806
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00551806