AN INVESTIGATION OF THE CENTRIFUGAL FORCE LOADING METHOD OF CREEP TESTING

Technical Report · Thu Dec 10 04:00:00 EST 1959

OSTI ID:4157843

Hook, R E; Adair, A M; Spretnak, J W

A centrifugal force loading creep testing machine was designed. constructed, and tested. Creep data were obtained for electrolytic tough-pitch copper and evaluated. Binary Ni-- Al alloys demonstrate the usefulness of this machine for obtaining relative creep strength data. The data on copper reveals that the specimen grain size has a bearing on the degree of dispersion. A smaller degree of dispersion was associated with a smaller grain size. Heattreated and prepared identically, specimens from different rods exhibited a significant variation in creep behavior. This variation was attributed to small differences in metallurgical structure, probably due to prior thermal and mechanical history. Tests on binary Ni-Al alloys revealed significant creep strength differences. Considerable scatter of the data for each alloy did not affect the determination of the relative creep strengths. The centrifugal force loading method of creep testing provides an inexpensive evaluation of relative creep strengths of materials. (auth)

• Research Organization: Wright Air Development Center. Aeronautical Research Lab., Wright-Patterson AFB, Ohio
• NSA Number: NSA-14-015073
• OSTI ID: 4157843
• Report Number(s): WADC-TR-59-779
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
BEARINGS
CENTRIFUGATION
COPPER
CREEP
DEFORMATION
DISPERSIONS
ECONOMICS
ELECTROLYTES
GRAIN SIZE
HEAT TREATMENTS
LABORATORY EQUIPMENT
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL ALLOYS
PLANNING
PREPARATION
PRESSURE
RODS
SOLIDS
VARIATIONS