Abstract
Constant amplitude fatigue crack growth rate tests were conducted on a nickel base superalloy IN718 at various stress ratios, R ranging from R = 0.1 to 0.7. Tests were conducted at room temperature and in lab air atmosphere. Tests were performed in a 100 KN computer-controlled servo-hydraulic test machine using compact tension specimens with sinusoidal waveform at 10 Hz. Crack length was monitored by compliance technique using COD gage. Increasing stress ratio was observed to increase crack growth rates and also decrease threshold stress intensity factor range, ∆Kth. Stress ratio effects on crack growth rates were correlated by using a two-parameter crack driving force, \(\Delta K*\). This approach was observed to provide a reasonably good correlation which can further be employed in modeling crack growth behavior under service loads.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Padula Ii SA, Shyam A, Ritchie RO, Milligan WW (1999) High frequency fatigue crack propagation behavior of a nickel-base turbine disk alloy. Int J Fatigue 21(7):725–731
Li HY, Sun JF, Hardy MC, Evans HE, Williams SJ, Doel TJA, Bowen P (2015) Effects of microstructure on high temperature dwell fatigue crack growth in a coarse grain PM nickel based superalloy. Acta Mater 90:355–369
King JE (1987) Fatigue crack propagation in nickel-base superalloys–effects of microstructure, load ratio, and temperature. Mater Sci Technol 3(9):750–764
Dahal J, Maciejewski K, Ghonem H (2013) Loading frequency and microstructure interactions in intergranular fatigue crack growth in a disk Ni-based superalloy. Int J Fatigue 57:93–102
Gustafsson D, Moverare J, Simonsson K, Johansson S, Hörnqvist M, Månsson T, Sjöström S (2011) Fatigue crack growth behaviour of Inconel 718–the concept of a damaged zone caused by high temperature hold times. Procedia Eng 10:2821–2826
Sree PC, Kujawski D (2014) A two-parameter fatigue crack growth correlation using ΔK and KMAX parameters. In: ASME 2014 international mechanical engineering congress and exposition. American Society of Mechanical Engineers, pp V009T12A033–V009T12A033
Manjunatha CM (2008) Fatigue crack growth prediction under spectrum load sequence in an aluminum alloy by K*-RMS approach. Int J Damage Mech 17(6):477–492
Malipatil SG, Majila AN, Fernando DC, Manjunatha CM (2019) Influence of crack driving force on correlating stress ratio effects in fatigue crack growth rate of a nickel base super alloy IN720. In: 4th Indian conference on applied mechanics, at indian institute of science (IISc). Bengaluru, pp 1–4
Kujawski D (2001) A fatigue crack driving force parameter with load ratio effects. Int J Fatigue 23:239–246
Newman JC Jr, Kota K, Lacy TE (2018) Fatigue and crack-growth behavior in a titanium alloy under constant-amplitude and spectrum loading. Eng Fract Mech 187:211–224
Elber W (1971) The significance of fatigue crack closure. Damage tolerance in aircraft structures. ASTM International
Tzamtzis A, Kermanidis AT (2014) Improvement of fatigue crack growth resistance by controlled overaging in 2024‐T3 aluminium alloy. Fatigue Fract Eng Mater Struct 37(7):751–763
Li Y, Wang H, Gong D (2012) The interrelation of the parameters in the Paris equation of fatigue crack growth. Eng Fract Mech 96:500–509
ASTM International (2011) Standard test method for measurement of fatigue crack growth rates. ASTM E647 International
Kujawski D (2001) A new (ΔK + Kmax)0.5 driving force parameter for crack growth in aluminum alloys. Int J Fatigue, 23(8), pp 733–740
Acknowledgements
Authors would like to thank the Director, GTRE and the Director, CSIR-NAL, for their encouragement and support during this work. They also would like to acknowledge the technical support rendered by the scientists and technical support staff members of SID, CSIR-NAL.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Malipatil, S.G., Majila, A.N., Chandru Fernando, D., Manjunatha, C.M. (2021). Correlating Stress Ratio Effects on the Fatigue Crack Growth Rate of a Nickel Base Superalloy IN718. In: Seetharamu, S., Jagadish, T., Malagi, R. (eds) Fatigue, Durability, and Fracture Mechanics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-4779-9_24
Download citation
DOI: https://doi.org/10.1007/978-981-15-4779-9_24
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-4778-2
Online ISBN: 978-981-15-4779-9
eBook Packages: EngineeringEngineering (R0)