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X-Ray Analysis of Ti3Al Precipitation in Ti-Al Alloys

Published online by Cambridge University Press:  06 March 2019

R. G. Baggerly
R. G. Baggerly*
Affiliation:
Science Center, Rockwell International, Thousand Oaks, California 91360
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Abstract

The effect of temperature on nucleation and growth of Ti3Al precipitates in two Ti-Al alloys was determined using sensitive X-ray diffraction techniques. The X-ray peaks arising from the ordered Ti3Al phase were compared with the fundamental peaks of the matrix. Peak broadening due to particle size resulted from the small Ti3Al precipitates and this was analysed using Fourier methods to determine a mean particle size and particle size distribution. The two alloys used for this investigation were Ti-8.5 wt.% Al and Ti-8%Al-1%Mo-1%V (8-1-1) alloy. The precipitate size in Ti-8.5 wt% Al was considerably more dependent on temperature than the precipitate size in 8-1-1 alloy, achieving a size of 190Å after 20 hrs at 650°C. The solvus temperature for precipitation was the same for both alloys, vis, 675°C to 700°C. These results compare favorably with transmission electron microscopy of thin foils prepared from the same samples.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 18: Twenty-Third Annual Conference on Applications of X-ray Analysis, August 7-9, 1974 , 1974 , pp. 502 - 513
Copyright
Copyright © International Centre for Diffraction Data 1974

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References

1. Blackburn, M. J., Trans. Am. Soc. Metals, 59, 694–708 (1966).Google Scholar
2. Soltis, P. J., Trans. Met. Soc. AIME, 233, 903–910 (1965).Google Scholar
3. Evans, K. R., Trans. Met, Soc. AIME, 242, 648–653 (1968).Google Scholar
4. Cias, W., Boeing Document D6-1631T Til, The Boeing Company, Seattle, Washington, 1965.Google Scholar
5. Blackburn, M. J., Trans. Met. Soc. AIME, 239, 1200–1208 (1967).Google Scholar
6. Stokes, A. R., Proc, Phys. Soc., 61, 382–391 (1948).Google Scholar
7. Warren, B. E. and Averbach, B. L., J. Appl. Phys., 21, 595–599 (1950).Google Scholar
8. Warren, B. E. and Averbach, B. L., J. Appl. Phys., 23, 497 (1952).Google Scholar
9. Warren, B. B. ana Averbach, B. L., J. Appl. Phys., 23, 1059 (1952).Google Scholar
10. Warren, B. E., Progress in Metal Physics, B. Chalmers and R. King, eds., vol. 8, pp. 147–202, Pergamon Press, New York, 1959.Google Scholar
11. Underwood, E., ASM Met. Engr. Quarterly, Nov., 1961.Google Scholar