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Evolutions of the anelastic recovery strain during the entire life for different unloading rates: (a) anelastic recovery strain of the unloading stage, ε an un , and (b) anelastic recovery strain near valley stress, ε an v .
Source publication
Uniaxial static and cyclic creep tests were carried out on bainite 2.25Cr-1Mo steel at 455 °C. Effects of the unloading rate from 0.6 to 39 MPa/s and valley stress duration from 0 to 30 min on the cyclic creep deformation behavior were discussed. The results indicated that the fracture behavior under static and cyclic creep conditions showed a cons...
Contexts in source publication
Context 1
... indicates that the value of the unloading elastic modulus is quite sensitive to the unloading rate and it increases greatly with an increase in the unloading rate. Thus, the value of ε an un under different unloading rates can be obtained as presented in Figure 8a, where it decreases with the increase in unloading rate and maintains a constant value after the first cycle. When the stress is unloaded to the valley in the case without a duration of valley stress, the evolution of ε an v under different unloading rates is shown in Figure 8b. ...
Context 2
... the value of ε an un under different unloading rates can be obtained as presented in Figure 8a, where it decreases with the increase in unloading rate and maintains a constant value after the first cycle. When the stress is unloaded to the valley in the case without a duration of valley stress, the evolution of ε an v under different unloading rates is shown in Figure 8b. The value of ε an v also maintains constant during the stable stage. ...
Context 3
... indicates that the value of the unloading elastic modulus is quite sensitive to the unloading rate and it increases greatly with an increase in the unloading rate. Thus, the value of ε an un under different unloading rates can be obtained as presented in Figure 8a, where it decreases with the increase in unloading rate and maintains a constant value after the first cycle. When the stress is unloaded to the valley in the case without a duration of valley stress, the evolution of ε an v under different unloading rates is shown in Figure 8b. ...
Context 4
... the value of ε an un under different unloading rates can be obtained as presented in Figure 8a, where it decreases with the increase in unloading rate and maintains a constant value after the first cycle. When the stress is unloaded to the valley in the case without a duration of valley stress, the evolution of ε an v under different unloading rates is shown in Figure 8b. The value of ε an v also maintains constant during the stable stage. ...
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Citations
... Therefore, research on creep in turbine blades has an important application value under alternating stress [4,5]. Compared to the fatigue-creep interaction, cyclic creep is mainly concerned with the alternating load effects on creep behaviour, such as: creep deformation, creep rate, rupture life, deformation mechanism, and failure law, and its static loading-time domain [6,7]. ...
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Various aspects of creep and deformation behaviors of metals and alloys at elevated temperatures are of great interest to materials scientists [...]
