Accession Number:

AD0608281

Title:

DEVELOPMENT OF A STABLE-BETA TITANIUM ALLOY.

Descriptive Note:

Quarterly rept. no. 7, 1 Jan-31 Mar 64,

Corporate Author:

TITANIUM METALS CORP OF AMERICA NEW YORK

Personal Author(s):

Report Date:

1964-03-31

Pagination or Media Count:

42.0

Abstract:

Samples of Ti-17V-10Cr-3Al-1Si, quenched from 2050F and aged at temperatures of 950-1150F, showed Vickers hardness increases ranging up to 100 points after aging for 1 hour or more at 1150F. Lesser hardness increases were produced by aging at either 950 or 1050F. Ti-17V10Cr-3Al-05Si showed a similar, although smaller aging response. Such hardness increases were not accompanied by any clear microstructural change. Substitution of 0.2 Be for Si resulted in no aging response. Hypereutectoid alloys Ti-8-10Ni-5Fe, Ti-8-10Ni-5Mn, Ti-11-13Co5Fe, and Ti-11-13Co-5Mn were quenched from 1750 and 1850F and aged at 900F. A marked aging response was only found in those alloys containing Ni. Metallographic examination showed that melting occurred in these alloys during solution treatment. Hot rolling pressure determinations on stable-beta alloys Ti-17V-10Mn-3Al and Ti-8Mo-8V-6Fe-3Al showed that these alloys were no more difficult to hot roll than the commercial beta alloy Ti-13V-11Cr-3Al. Complete substitution of Co for Fe in a stable-beta alloy Ti-8Mo-8V-5Fe-3Al did not improve uniform elongation. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE