A lifetime model for creep-fatigue interaction with applications to the creep resistant steel P92

Riedel, Hermann; Maier, Gerhard; Oesterlin, Heiner

doi:10.1016/j.ijfatigue.2021.106308

Cited by 14 publications

(2 citation statements)

References 43 publications

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“…Such situations lead to an increasing attention over the world and prompt the studies on the creep-fatigue interaction. [1][2][3][4] Introducing hold times in continuous strain-controlled cyclic tests is the most extensive method to reveal the mechanism of creep-fatigue interaction, as shown in Figure 1. A steadystate operation can be simulated experimentally when a specimen is held at the maximum tensile and/or compressive strain, and then, the creep damage can be calculated systematically based on stress relaxation curves.…”

Section: Introductionmentioning

confidence: 99%

“…In such a case, the creep–fatigue interaction appears and accelerates the total damage accumulation, different from pure creep or fatigue process. Such situations lead to an increasing attention over the world and prompt the studies on the creep–fatigue interaction 1–4 . Introducing hold times in continuous strain‐controlled cyclic tests is the most extensive method to reveal the mechanism of creep–fatigue interaction, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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A modified energy model including mean stress and creep threshold stress effect for creep–fatigue life prediction

Song

Zhao

Han

et al. 2022

Fatigue Fract Eng Mat Struct

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Creep-fatigue interaction plays an important role in the failure of hightemperature components. However, most of the existing life prediction limits materials and testing conditions. The present study was conducted to modify the strain energy density exhaustion model systematically to predict the creepfatigue life under a wide range of materials, hold times, and total strain ranges. Mean stress effect was considered by the creep-fatigue net tensile hysteretic energy to eliminate the overestimation of fatigue damage in the traditional method, while creep threshold stress was introduced to estimate the creep damage. In addition, a novel failure strain energy model was proposed to describe the correlation among failure strain energy, creep failure mechanisms, and temperatures. Based on the tension-hold creep-fatigue data of Grade 91 steel, 304 SS, Alloy 617, and 1Cr1Mo0.25V steel, the modified model predicted reasonable lives within a ±1.5 scatter band.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%