Abstract
The application of monovariant eutectic reactions to the preparation of metal matrix composites is discussed. As is well-known, this class of reactions leads to structures similar to those of an invariant binary eutectic reaction, since in both cases two solid phases precipitate simultaneously from a liquid.
In the case of monovariant eutectics, however, one of these phases is a solid solution. The composition of this solid solution may be varied within wide limits, and a substantial influence on the properties of the matrix and the morphology of the fibres is therefore possible.
As examples, the systems Ag/Au/Si and C/Cr/Ni/Si are used. The former, which has a monovariant ternary eutectic as its only constitutional feature, serves well as a simple demonstration model.
In the C/Cr/Ni/Si system, strengthening of a Cr/Ni/Si matrix (82.25 wt % Ni/11.00 wt % Cr/6.35 wt % Si) by 22 vol % Cr3C2 could be achieved by directional solidification.
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References
F. A. Bonnano andJ. C. Withers, “Advanced Fibrous Reinforced Composites”, Vol. 10 (Western Periodicals Co, North Hollywood, Calif, 1966) p. F105.
A. Herzog,Z. Metalk. 58 (1967) 525.
L. R. Standifer,ibid p. 512.
J. A. Alexander, W. F. Stuhrke, andK. C. Chuang, “Advanced Fibrous Reinforced Composites”, Vol. 10 (Western Periodicals Co, North Holywood, Calif, 1966) p. F91.
H. E. Bates, F. Wald, andM. Weinstein,ibid“ p. E41.
A. G. Metcalfe,J. Composite materials 1 (1967) 356.
F. D. Lemkey, R. W. Hertzberg, andJ. A. Ford,Trans. Met. Soc. AIME 233 (1965) 334.
R. W. Hertzberg, F. D. Lemkey, andJ. A. Ford,ibid p. 342.
B. J. Bayles, J. A. Ford, andM. J. Salkind,ibid 239 (1967) 844.
A. Hellawell,Metals and Materials 1 (1967) 361.
F. R. Mollard andM. C. Flemings,Trans. Met. Soc. AIME 239 (1967) 1526, 1534.
A. Prince, “Alloy Phase Equilibria” (Elsevier, New York, 1966).
R. N. Rhines, “Phase Diagrams in Metallurgy” (McGraw-Hill, New York, 1956).
G. Masing, “Ternary Systems” (Dover, New York, 1960).
W. Koester andS. Kabermann,Arch. Eisenhüttenw. 26 (1955) 627.
F. Wald, H. E. Bates, andM. Weinstein,Trans. Met. Soc. AIME 242 (1968) 760.
ASTM, X-ray Powder Data File, Card No. 14-406.
M. Hansen, “Constitution of Binary Alloys” (McGraw-Hill, New York, 1956).
R. P. Elliot,ibid“, first supplement (1965).
W. Köster andW. Rauscher,Z. Metalk. 39 (1949) 111.
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Bates, H.E., Wald, F. & Weinstein, M. Controlled solidification of metal matrix composites utilising monovariant eutectic reactions. J Mater Sci 4, 25–32 (1969). https://doi.org/10.1007/BF00555044
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DOI: https://doi.org/10.1007/BF00555044