Rißwachstum unter überlagerter Kriech- und Ermüdungsbelastung in X10N1CrAITi 3220 (Alloy 800)
Rißwachstum unter überlagerter Kriech- und Ermüdungsbelastung in X10N1CrAITi 3220 (Alloy 800)
To investigate the crack growth behaviour under combined creepfatigue loading, CT 25mm-specimens of X10NiCrAlTi 32 20 (Alloy 800) have been tested in experiments with cyclic loadings and hold times, with static loadings and short stress relief interrupts, with ramp type loadings and with sequences o...
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Personal Name(s): | Pfaffelhuber, M. (Corresponding author) |
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Rödig, M. / Schubert, F. / Nickel, Hubertus | |
Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
Imprint: |
Jülich
Kernforschungsanlage Jülich GmbH, Zentralbiliothek, Verlag
1989
|
Physical Description: |
X, 130 p. |
Document Type: |
Report Book |
Research Program: |
ohne Topic |
Series Title: |
Berichte der Kernforschungsanlage Jülich
2303 |
Link: |
OpenAccess |
Publikationsportal JuSER |
To investigate the crack growth behaviour under combined creepfatigue loading, CT 25mm-specimens of X10NiCrAlTi 32 20 (Alloy 800) have been tested in experiments with cyclic loadings and hold times, with static loadings and short stress relief interrupts, with ramp type loadings and with sequences of separatefatigue and creep crack growth periods. The test temperature of 700°C was selected because only in this temperature range this alloy provides similar amounts of crack growth under creep and fatigue conditions due to equivalent stress levels. For the estimation of crack growth under combined loading conditions a linear accumulation of increase in crack length was proved using the crack growth laws of pure creep and fatigue crack growth. Hold time and ramp loadings lead to a higher crack growth rate compared with pure creep or pure fatigue crack growth tests. In hold time experiments the crack growth rate is higher than ramp tests of the same period time. The results of hold time tests can be fairly enough predicted by linear damage accumulation rules. |