The effect of high frequencies on the cyclic creep behavior of an ODS superalloy

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Scr. Metall.; (United States)

DOI:https://doi.org/10.1016/0036-9748(87)90396-6· OSTI ID:6230786

Stefani, J A; Nardone, V C; Tien, J K

The anelastic strain controlled model is capable of explaining the behavior of the cyclic creep rate as a function of frequency for the ODS superalloy MA 6000, especially the sharp drop in cyclic creep rate that occurs at a frequency of about 0.2 cycles/h. The success of the anelastic strain model depends upon the plausibility of assuming that anelastic strain storage completely delays nonrecoverable strain, i.e., that anelastic and nonrecoverable strain storage are a series process. This is an important point since, as seen in the comparison of the predicted and obtained cyclic creep results, there is the excellent fit of the data in the region where there is a sharp drop in the cyclic creep rate but a poorer fit in the higher frequency region. In the higher frequency regime, there is an observed positive cyclic creep rate when the refined anelastic model predicts a zero strain rate.

• Research Organization: Henry Krumb School of Mines, Columbia Univ., New York, NY 10027
• OSTI ID: 6230786
• Journal Information: Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Journal Issue: 1 Vol. 21:1; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CREEP
ELASTICITY
FREQUENCY DEPENDENCE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
PERFORMANCE TESTING
STRAIN RATE
STRAINS
TENSILE PROPERTIES
TESTING