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Rapidly Solidified Binary Tial Alloys

Published online by Cambridge University Press:  28 February 2011

S. C. Huang,
E. L. Hall and
M. F. X. Gigliotti
S. C. Huang
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
E. L. Hall
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
M. F. X. Gigliotti
Affiliation:
General Electric Research and Development Center, Schenectady, New York 12301
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Abstract

Melt spinning has been carried out on binary TiAl alloys at three Ti/Al ratios. Antiphase domains were observed in one ribbon specimen, but no significant disordering was induced by the rapid solidification as indicated by X-ray and electron diffraction analyses. Bending tests of both the ribbons and the consolidated counterparts showed a decrease in ductility with increasing Al concentration. This compositional effect can be correlated with the TiAl tetragonality (the c/a ratio) as well as the grain structure.

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References

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