Fatigue–Creep Interaction of P92 Steel and Modified Constitutive Modelling for Simulation of the Responses
Abstract
:1. Introduction
2. Material, Specimens and Experiments
3. Experimental Observations
3.1. Dwell Time Effect
3.2. Temperature Effect
3.3. Strain Range Effect
4. Unified Viscoplastic Constitutive Model
4.1. Conventional Chaboche Model
4.2. Simulation Capability of the Conventional Chaboche Model
4.3. Modification of Constitutive Model
4.3.1. Modification of the Kinematic Hardening Rule
4.3.2. Modification of the Isotropic Hardening Rule
5. Determination of Material Parameters
6. Simulation and Discussion
6.1. Simulation of Fatigue–Creep Responses at 600 °C
6.2. Simulation of Fatigue–Creep Loading at 650 °C
6.3. Simulation of Fatigue–Creep Responses for Different Strain Ranges
7. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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C | Mn | Si | P | S | Cr | Mo | V | N | Ni | Al | Nb | W | B |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.106 | 0.36 | 0.235 | 0.017 | 0.008 | 9.2 | 0.368 | 0.182 | 0.061 | 0.108 | 0.0059 | 0.078 | 1.85 | 0.0022 |
Test No. | Temperature, T | Total Strain Range, ε | Dwell Time, th | Fatigue Life, Nf |
---|---|---|---|---|
1 | 600 °C | 0.8% | 60 s | 1303 |
2 | 0.8% | 180 s | 1190 | |
3 | 0.8% | 600 s | 675 | |
4 | 1.2% | 180 s | 541 | |
5 | 650 °C | 0.8% | 60 s | 870 |
6 | 0.8% | 180 s | 853 | |
7 | 0.8% | 600 s | 625 | |
8 | 1.2% | 180 s | 482 |
(1) | |
(2) | |
(3) | |
(4) | |
(5) | |
(6) | |
(7) | |
(8) |
T = 600 °C |
---|
E = 161,933.00 MPa, k = 180.00 MPa; |
Q = −111.06 MPa, b = 0.81, H = −4.00 MPa, Qr = −105.74 MPa, = 2.14 × 10−8, |
= 2.01 × 10−8, |
r = 5.98, mr = 2.80; |
a1 = 27.05 MPa, C1 = 25,000.00, a2 = 72.39 MPa, C2 = 996.97, γ1 = 3.00 × 10−9, γ2 = 7.47 × 10−7, |
q = 10.00, m = 3.87; |
Z = 1028.00 MPa·s1/n, n = 3.00 |
T = 650 °C |
E = 134,573.00 MPa, k = 132.00 MPa; |
Q = −93.31 MPa, b = 0.66, H = −4.00 MPa, Qr = −86.67 MPa, = 1.93 × 10−8, |
= 9.22 × 10−8, |
r = 1.05, mr = 2.46; |
a1 = 9.89 MPa, C1 = 24,685.10, a2 = 49.87 MPa, C2 = 1055.00, γ1 = 1.00 × 10−8, γ2 = 2.00 × 10−6, |
q = 5.80, m = 3.90; |
Z = 700.00 MPa·s1/n, n = 3.80 |
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Zhang, T.; Wang, X.; Zhang, W.; Hassan, T.; Gong, J. Fatigue–Creep Interaction of P92 Steel and Modified Constitutive Modelling for Simulation of the Responses. Metals 2020, 10, 307. https://doi.org/10.3390/met10030307
Zhang T, Wang X, Zhang W, Hassan T, Gong J. Fatigue–Creep Interaction of P92 Steel and Modified Constitutive Modelling for Simulation of the Responses. Metals. 2020; 10(3):307. https://doi.org/10.3390/met10030307
Chicago/Turabian StyleZhang, Tianyu, Xiaowei Wang, Wei Zhang, Tasnim Hassan, and Jianming Gong. 2020. "Fatigue–Creep Interaction of P92 Steel and Modified Constitutive Modelling for Simulation of the Responses" Metals 10, no. 3: 307. https://doi.org/10.3390/met10030307