Abstract
The evolution of the mechanical alloying process by ball-milling elemental chromium and niobium powders has been studied as a function of milling time. Evaluation of the layered structure of the alloyed powders by energy dispersive spectroscopy and X-ray analysis has been made. Although the Cr2Nb hexagonal phase forms after 15 h milling time, when much of the powder presents the equilibrium range of composition, further milling to 25 h produces the disappearance of this phase. This behaviour is explained in terms of chemical disorder induced by the deformation process such that structure stability is not possible when a high degree of order is required.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. S. Benjamin, Metall. Trans., 1 (1970) 2943.
P. S. Gilman and J. S. Benjamin, Ann. Rev. Mater. Sci. 13 (1983) 279.
M. A. Morris and D. G. Morris, Mater. Sci. Eng. A111 (1989) 115.
C. Politis and W. L. Johnson, J. Appl. Phys. 60 (1986) 1147.
E. Hellstern and L. Schultz, Appl. Phys. Lett. 48 (1986) 124.
C. C. Koch, O. B. Cavin, C. G. McKamey and J. O. Scarbrough, ibid. 43 (1983) 1017.
A. W. Weeber and H. Bakker, Physica B 153 (1988) 93.
R. B. Schwarz, R. R. Petrich and C. K. Saw, J. Non-Cryst. Solids 76 (1985) 281.
W. B. Pearson, “Handbook of Lattice Spacings and Structure of Metals and Alloys” (Pergamon Press, Oxford, 1967) p. 1880.
W. L. Johnson, Progr. Mater. Sci. 30 (1986) 81.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Morris, M.A. Composition and structure variations during mechanical alloying to produce the intermetallic Cr2Nb. J Mater Sci 26, 1157–1164 (1991). https://doi.org/10.1007/BF00544449
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00544449