Abstract
Standards were prepared for calibrating microanalyses of dissolved oxygen in unalloyed α-Ti and Ti-6Al-2Sn-4Zr-2Mo. Foils of both these materials were homogenized for 120 hours in vacuum at 871 °C following short exposures to the ambient atmosphere at 854 °C that had partially oxidized the foils. The variation of Knoop microhardness with oxygen content was calibrated for both materials using 15 g and 5 g indentor loads. The unit-cell lattice parameters were calibrated for the unalloyed α-Ti. Example analyses demonstrate the usefulness of these calibrations and support an explanation of an anomaly in the lattice parameter variation. The results of the calibrations have been tabulated and summarized using predictive equations.
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References
C.E. Shamblen and T. K. Redden:Science and Technology and Application of Titanium. 1968, p. 199.
R. K. Clark, J. Unnam, and C.W Stroud:Proceedings of 30th National SAMPE Symposium. March 1985.
R. K. Clark and J. Unnam: NASA TM86294. August 1984.
D. Gupta and S. Weinig:Trans. AIME, 1959, vol. 215, pp. 209–16.
E.S. Bumps, H.D. Kessler, and M. Hansen:Trans. ASM, 1953, vol. 45, p. 1008.
C. E. Feng and C. Elbaum:Trans. Am. Institute of Metallurgical Engrs., 1958, vol. 212.
S. Anderson, B. Collen, U. Kuylenstierna, and A. Magneli:Acta Chem. Scand., 1957, vol. 11, p. 1641.
A Garcia. J. Com-Nouae, X. Lucas. G. Beranger, and P. Lacombe:C.R. Acad. Sci.. Ser. C., 1973. vol. 277 (24). p. 1291.
G.E. Dieter:Mechanical Metallurgy. 2nd ed.. McGraw-Hill Book Company. New York. NY. 1976. p. 399.
I. Szanto:Acta Tech. Acad. Sci. Hung., 1955. vol. 13. p. 1195.
International Tables for X-ray Crystallography. C.H. Macgillaury and G. D. Rieck. eds.. the Kinoch Press. Birmingham. 1968. vol. 3, p. 123.
B.E. Warren:X-ray Diffraction. Addison-Wesley Publishing Com pany. Reading. MA, 1969. p. 71.
K.E. Wiedemann and J. Unnam:Advances in X-ray Analysis, C. S. Barrett, J.B. Cohen. J. Faber. Jr.. R. Jenkins. D.E. Leyden. J. C. Russ. and P. K. Predecki. eds.. Plenum Publishing Corporation, pp. 193-202.
K.E. Wiedemann and J. Unnam:J. Appl. Phys., 1985, vol. 58 (3). pp. 1095–1101.
B. Holmberg:Acta Chem. Scand.. 1962. vol. 16, pp. 1245–50.
Metals Handbook. 8th ed.. T. Lyman. ed.. ASM INTERNATIONAL. 1973. vol. 8. p. 327.
A. Jostons and A. S. Malin:Acta Cryst. B. 1968. vol. 24. pp. 211–13.
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Wiedemann, K.E., Shenoy, R.N. & Unnam, J. Microhardness and lattice parameter calibrations of the oxygen solid solutions of unalloyed α-titanium and Ti-6Al-2Sn-4Zr-2Mo. Metall Trans A 18, 1503–1510 (1987). https://doi.org/10.1007/BF02646662
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DOI: https://doi.org/10.1007/BF02646662