Abstract:
By using dropped
stress creep method a new testing technique for measurement of
the fatigue-creep interaction resistance is developed. At varied
adjusted mean stresses the creep testing was performed
repeatedly. When an unlimited extensive incubation period with
zero creep rate occurred, the stress causing zero creep rate is
defined as fatigue-creep resistance. The developed testing
technique was used to measure the fatigue-creep resistance in F
and C regions. The dynamic effective stress could yield a better
description of fatigue and creep interaction. The fatigue-creep
rate equations with varied exponents in F or C region are
established. The different deformation mechanisms in F or C
regions are indicated.
Key words:
Fatigue-creep interaction Resistance measurement Testing technique
Manuscript received on
December 17, 1994
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