Energy-based approach for the evaluation of low cycle fatigue behaviour of 2.25Cr–1Mo steel at elevated temperature

Callaghan, Mark; Humphries, S. R.; Law, Michael R.; Ho, Mark K.; Bendeich, Philip J.; Li, Huijun; Yeung, Wing Yiu

doi:10.1016/j.msea.2010.05.011

Cited by 58 publications

(20 citation statements)

References 8 publications

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“…As for materials with Masing cyclic stress-strain behaviour, average plastic strain energy, ∆W p,c , can be calculated by Eq. (4) and (5) (Callaghan et al, 2010).…”

Section: Plastic Strain Energymentioning

confidence: 99%

Fatigue behaviour of G20Mn5QT cast steel and butt welds with Q345B steel

et al. 2016

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A total number of 44 fatigue tests were conducted under total stain control, 26 for G20Mn5QT cast steel and 18 for butt welds between G20Mn5QT cast steel and Q345B steel. Based on the test results, cyclic stress response, plastic strain energy, strainlife curves and Coffin-Manson equations were presented. Comparing with hot rolled steels widely used in steel construction, the fatigue behaviour of G20Mn5QT cast steel is poor, the reason for which was imputed to the defects caused by the casting process. The welds between G20Mn5QT cast steel and Q345B steel exhibited similar fatigue performance as G20Mn5QT cast steel. Fatigue crack tends to initiate in the heat affected zone (HAZ) at the cast steel. Microstructure observations using optical and scanning electron microscope showed that casting defects are the common fatigue source for both G20Mn5QT cast steel and the butt welds between G20Mn5QT cast steel and Q345B steel.

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“…As for materials with Masing cyclic stress-strain behaviour, average plastic strain energy, ∆W p,c , can be calculated by Eq. (4) and (5) (Callaghan et al, 2010).…”

Section: Plastic Strain Energymentioning

confidence: 99%

Fatigue behaviour of G20Mn5QT cast steel and butt welds with Q345B steel

et al. 2016

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“…Besides, many materials show cyclic hardening or cyclic softening behaviour under cyclic loading, which may cause the variation in plastic strain range. It was reported that the variation of hysteresis energy density (HED) was relatively small throughout the fatigue process under high temperature even cyclic hardening occurs 21,22 . Hence, the energy‐based approach shows a good promising in bridging the life prediction and physical mechanism, and it can be an alternative to strain‐based methods.…”

Section: Review Of Energy‐based Fatigue Life Prediction Modelsmentioning

confidence: 99%

An efficient fatigue and creep‐fatigue life prediction method by using the hysteresis energy density rate concept

Wang

2020

Fatigue Fract Eng Mat Struct

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Fatigue damage, time-dependent creep damage and their interaction are considered as the main failure mechanisms for many high temperature structural components. A generalized methodology for predicting both the high temperature low cycle fatigue (HTLCF) and creep-fatigue lives by using the hysteresis energy density rate (HEDR) and fatigue damage stress concepts was proposed.Experimental data for HTLCF and creep-fatigue in Alloy 617, Haynes 230 and

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“…Though these methods can account for the loading waveform effect, the damage interaction diagram, which is very crucial in the design and safety assessment of high-temperature structures, cannot be established. Since experiments and theory [20,21] have revealed that a stable value of hysteresis energy is arrived after a short initial cycle, even the materials possess the cyclic hardening or softening behavior, many energy-based fatigue life prediction methods have been proposed, and good prediction accuracy is obtained [22][23][24][25][26][27][28]. For example, Wang et al [26,27] proposed a modified strain energy density exhaustion model for creep-fatigue life prediction in which the mean stress effect is considered.…”

Section: Introductionmentioning

confidence: 99%

A New 3D Creep-Fatigue-Elasticity Damage Interaction Diagram Based on the Total Tensile Strain Energy Density Model

Wang

Zhang

Wang

2020

Metals

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Fatigue damage, creep damage, and their interactions are the critical factors in degrading the integrity of most high-temperature engineering structures. A reliable creep-fatigue damage interaction diagram is a crucial issue for the design and assessment of high-temperature components used in power plants. In this paper, a new three-dimensional creep-fatigue-elasticity damage interaction diagram was constructed based on a developed life prediction model for both high-temperature fatigue and creep fatigue. The total tensile strain energy density concept is adopted as a damage parameter for life prediction by using the elastic strain energy density and mean stress concepts. The model was validated by a great deal of data such as P91 steel at 550 °C, Haynes 230 at 850 °C, Alloy 617 at 850 and 950 °C, and Inconel 625 at 815 °C. The estimation values have very high accuracy since nearly all the test data fell into the scatter band of 2.0.

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Energy-based approach for the evaluation of low cycle fatigue behaviour of 2.25Cr–1Mo steel at elevated temperature

Cited by 58 publications

References 8 publications

Fatigue behaviour of G20Mn5QT cast steel and butt welds with Q345B steel

Fatigue behaviour of G20Mn5QT cast steel and butt welds with Q345B steel

An efficient fatigue and creep‐fatigue life prediction method by using the hysteresis energy density rate concept

A New 3D Creep-Fatigue-Elasticity Damage Interaction Diagram Based on the Total Tensile Strain Energy Density Model

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