Short-time creep of columbium and tantalum alloys at 2600 to 3200 F

Journal Article · Sun Sep 01 04:00:00 EDT 1974 · J. Test. Eval.; (United States)

OSTI ID:7280308

Perkins, F R.A.; Wright, E S

Uncoated Ta-17W and C129Y alloys and coated Ta-10W, C103, and C129Y alloys have been evaluated for short-time creep behavior at 2600 to 3200/sup 0/F. The time for creep strains of up to 2 percent has been measured and the results have been used to derive empirical equations that predict short-time creep life in this temperature range. The equations give estimates of the time-to-creep strains of up to 2 percent at stress levels that will produce the maximum strain in 60 min or less. Silicide-base coatings appear to add to the creep strength of coated Ta-10W but have little added effect on the strength of the columbium-base alloys. The creep behavior of coated metals can be analyzed by the same empirical methods as those used for uncoated metals.

• Research Organization: United Aircraft Corp., Hartford, CT
• OSTI ID: 7280308
• Journal Information: J. Test. Eval.; (United States), Journal Name: J. Test. Eval.; (United States) Vol. 2; ISSN JTEVA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
COATINGS
CREEP
MECHANICAL PROPERTIES
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
TANTALUM ALLOYS
TANTALUM BASE ALLOYS
TUNGSTEN ALLOYS
YTTRIUM ALLOYS