Effects of stress ratio on the temperature-dependent high-cycle fatigue properties of alloy steels

Lü, Zhi-yang; Wan, Aoshuang; Xiong, Jun-Jiang; Kuang, Li; Liu, Jianzhong

doi:10.1007/s12613-016-1362-5

Cited by 10 publications

(1 citation statement)

References 25 publications

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“…They are prone to fatigue damage due to the long‐term service life. This is primarily caused by the high‐frequency vibrational loadings at low stress amplitudes under various operating conditions 30,31 . Therefore, the high‐cycle fatigue (HCF, <10 7 cycles) and very high‐cycle fatigue (VHCF, ≥10 7 cycles) performances are crucial in ensuring the reliability of steam turbine rotors.…”

Section: Introductionmentioning

confidence: 99%

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

Mai,

Liu,

Chen

et al. 2024

Fatigue Fract Eng Mat Struct

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The microstructure, mechanical properties, and high/very‐high cycle fatigue behaviors of 9Cr3W3Co turbine rotor steel and its welded joint were investigated. The welded nugget zone (WNZ) exhibited the highest microhardness value, followed by the heat‐affected zone (HAZ), while the base material (BM) showed the lowest hardness value. The WNZ exhibited a higher yield strength compared to the BM with reduced elongation, while maintaining similar ultimate tensile strength. The fatigue strength of the BM at 5 × 107 cycles is roughly 53.7% of the yield strength, whereas that of the WNZ increases to approximately 55.0%. In comparison to the fatigue strength of the BM at 5 × 107 cycles, the WNZ exhibits a notable increase of 10.5%. Smaller grain size and higher dislocation density were observed in the WNZ, which contributed to improved microhardness, yield strength, and fatigue resistance through grain boundary strengthening and dislocation hardening.

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Section: Introductionmentioning

confidence: 99%

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

Mai,

Liu,

Chen

et al. 2024

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

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General aspects on structural integrity

Xiong

Shenoi

2019

Chinese Journal of Aeronautics

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Effect of stress ratio on HCF and VHCF properties at temperatures of 20 °C and 700 °C for nickel-based wrought superalloy GH3617M

Wan

Xiong

2019

Chinese Journal of Aeronautics

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Effects of stress ratio on the temperature-dependent high-cycle fatigue properties of alloy steels

Cited by 10 publications

References 25 publications

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

General aspects on structural integrity

Effect of stress ratio on HCF and VHCF properties at temperatures of 20 °C and 700 °C for nickel-based wrought superalloy GH3617M

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Effects of stress ratio on the temperature-dependent high-cycle fatigue properties of alloy steels

Cited by 10 publications

References 25 publications

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

Comparison in microstructure, mechanical properties, and fatigue behavior of 9Cr3W3Co turbine rotor steel and its welded joint

General aspects on structural integrity

Effect of stress ratio on HCF and VHCF properties at temperatures of 20 °C and 700 °C for nickel-based wrought superalloy GH3617M

Contact Info

Product

Resources

About

Effect of stress ratio on HCF and VHCF properties at temperatures of 20 °C and 700 °C for nickel-based wrought superalloy GH3617M