Comparison of ratcheting rates under for the same combinations of stress amplitude and mean stress for AM90 coupons, following the material’s response stabilisation
| Stress amplitude, mean stress | Load case/coupon | Ratcheting rate | Evaluated cycle |
|---|---|---|---|
| 1,300 MPa, 500 MPa | AM90-1 | 1.483E−5 | 100 |
| AM90-2 | 2.439E−6 | 200 | |
| 1,400 MPa, 500 MPa | AM90-2 | 5.482E−5 | 270 |
| AM90-3 | 7.461E−5 | 60 | |
| 1,333 MPa, 513 MPa 1,300 MPa, 500 MPa | CM-1 | 1.563E−6 | 100 |
| CM-2 | 2.107E−6 | 200 | |
| 1,400 MPa, 500 MPa | CM-2 | 1.390E−5 | 270 |
| CM-3 | 1.443E−5 | 60 |
| Stress amplitude, mean stress | Load case/coupon | Ratcheting rate | Evaluated cycle |
|---|---|---|---|
| 1,300 MPa, 500 MPa | AM90-1 | 1.483E−5 | 100 |
| AM90-2 | 2.439E−6 | 200 | |
| 1,400 MPa, 500 MPa | AM90-2 | 5.482E−5 | 270 |
| AM90-3 | 7.461E−5 | 60 | |
| 1,333 MPa, 513 MPa | CM-1 | 1.563E−6 | 100 |
| CM-2 | 2.107E−6 | 200 | |
| 1,400 MPa, 500 MPa | CM-2 | 1.390E−5 | 270 |
| CM-3 | 1.443E−5 | 60 |
Source(s): Authors’ own work
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