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Effect of Strain Range and Hold Time on High Temperature Fatigue Life of G17CrMoV5-10 Cast Alloy Steel

Fatigue of Aircraft Structures
Volume 2022 (2022): Issue 14 (December 2022)
By:
Open Access
|Nov 2023

Figures & Tables

Figure 1.

Hysteresis loop of the LCF test shown for 100%, 50%, and 0% of life. LCF, low cycle fatigue.
Hysteresis loop of the LCF test shown for 100%, 50%, and 0% of life. LCF, low cycle fatigue.

Figure 2.

Maximum stresses.
Maximum stresses.

Figure 3.

Fatigue life for 0.4% and 0.6% Δε total stain.
Fatigue life for 0.4% and 0.6% Δε total stain.

Figure 4.

Stress relaxation during hold time, th = 120 s.
Stress relaxation during hold time, th = 120 s.

Figure 5.

Strain during tests for 0.4% and 0.6% of total strain.
Strain during tests for 0.4% and 0.6% of total strain.

Figure 6.

Alternating and mean stresses for 0.4% and 0.6% of total strain.
Alternating and mean stresses for 0.4% and 0.6% of total strain.

LCF fatigue test matrix_

Temperature, T (°C)500Hold time, th (s)Frequency, (Hz)Total strain, Δε (%)
Strain ratio, R=εmaxεmin\[R=\frac{{{\varepsilon }_{\max }}}{{{\varepsilon }_{\min }}}\]-1
Cycle scheme
00.080.4
0.6
1200.0080.4
0.6

Steel G17CrMoV5-10 chemical composition for cast_

ElementCSiMnPSNiCrMoVCuSn
wt.%0.190.40.90.0140.0110.081.441.040.20.300.001
DOI: https://doi.org/10.2478/fas-2022-0001 | Journal eISSN: 2300-7591 | Journal ISSN: 2081-7738
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Language: English
Page range: 1 - 7
Published on: Nov 28, 2023
Published by: Institute of Aviation
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
fatigue,
LCF,
hold time,
strain,
steam turbine
Related subjects:
Engineering,
Introductions and overviews,
Engineering, other

© 2023 Anna Polnik, Hubert Matysiak, Sławomir Czarnewicz, Zbigniew Pakieła, published by Institute of Aviation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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