Abstract
A number of researchers have suggested that there may be phase relationships in the Al-Ti-B system, which can be used to explain why boron improves the grain refining ability of aluminum-titanium master alloys. In this paper, the available information on the phase diagram is reviewed and theoretical calculations are made to establish the ternary Al-Ti-B phase diagram. The phase diagram cannot explain the important effect of boron. It appears to be necessary to seek another explanation.
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L. Arnberg, L. Bäckerud, and H. Klang:Metals Technology, 1982, vol. 9, pp. 1–6.
J. A. Marcantonio and L. F. Mondolfo:Metall. Trans., 1971, vol. 2, pp. 465–71.
I. Maxwell and A. Hellawell:Acta Metall., 1975, vol. 23, pp. 901–09.
F.A. Crossley and L.F. Mondolfo:Trans. AIME, 1951, vol. 191, pp. 1143–48.
I. Maxwell and A. Hellawell:Metall. Trans., 1972, vol. 3, pp. 1487–93.
A. Cibula:J. Inst. Metals, 1949, vol. 76, pp. 321–60.
A. Cibula:J. Inst. Metals, 1951-1952, vol. 80, pp. 1–16.
A. J. Cornish:Metal Science, 1975, vol. 9, pp. 477–84.
H. Klang : “Grain Refinement of Aluminum by Addition of Al-Ti-B Master Alloys,” Ph.D. Thesis, available asChemical Communications of the University of Stockholm, 1981, No. 4.
F.. Morimune, H. Shingu, K. Kobayashi, and R. Ozaki:Journal Japan. Inst. Metals, 1977, vol. 41, pp. 444–50.
L. Bäckerud:Jernkontorets Annaler, 1971, vol. 155, pp. 422–24.
I. H. Perepezko and S. E. LeBeau : “Nucleation of Aluminum during Solidification”, paper presented at 2nd International Symposion on Aluminum Transformation Technology, Buenos Aires, August 1981.
E. L. Glasson and E. F. Emley:Solidification of Metals, Iron and Steel Inst., London, 1968, pp. 1–9.
M. Hansen and K. Anderko:Constitution of Binary Alloys, 2nd ed., McGraw-Hill, New York, NY, 1958, pp. 70–72 and 139–42.
R.P. Elliott:Constitution of Binary Alloys, First Supplement, McGraw-Hill, New York, NY, 1965, pp. 26–27 and 58-61.
F. A. Shunk:Constitution of Binary Alloys, Second Supplement, McGraw-Hill, New York, NY, 1969, pp. 16 and 44-45.
W. Hofmann and W. Janiche:Z. Metallkunde, 1936, vol. 28, pp. 1–5.
E.H. Wright and L.A. Willey:Aluminum Binary Equilibrium Diagrams, unpublished research, available as Alcoa Research Laboratories Technical Paper No. 15, 1960.
R. Hultgren, P. D. Desai, D. T. Hawkins, M. Gleiser, K. K. Kelly, and D. D. Wagman:Selected Values of the Thermodynamic Properties of the Elements, ASM, Metals Park, OH, 1973, pp. 25–29.
W. L. Fink, K.R. Van Horn, and P.M. Budge:Trans. AIME, 1931, vol. 93, pp. 421–36.
H.W.L. Phillips: “Equilibrium Diagrams of Aluminum Alloy Systems”,Information Bulletin 25, Aluminum Development Association, London, 1961, p. 36. (As given in Reference 3.)
I. G. Davies, J.M. Dennis, and A. Hellawell:Metall. Trans., 1970, vol. l,pp. 275–80.
G. P. Jones and J. Pearson:Metall. Trans. B, 1976, vol. 7B, pp. 223–34.
C. E. Ransley :Producing or Refining Aluminum, U.S. Patent No. 3,028,324, April 3, 1962.
A. Cibula:Metall. Trans., 1972, vol. 3, pp. 751–53.
N. J. Finch:Metall. Trans., 1972, vol. 3, pp. 2709–11.
D. R. Stull and H. Prophet:JANAF Thermochemical Tables, Second Edition, NSRDS-NBS37, National Bureau of Standards, Washington, DC, 1971.
L. Bäckerud: University of Stockholm, private communication, October 1982.
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Sigworth, G.K. The Grain Refining of Aluminum and Phase Relationships in the Al-Ti-B System. Metall Trans A 15, 277–282 (1984). https://doi.org/10.1007/BF02645112
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DOI: https://doi.org/10.1007/BF02645112