Study of Fatigue Crack Growth and Threshold Values in an Inconel 718 - René 41 Weld at High Temperature and Low Load Frequency

Ivo Černý; Luboš Remar; Dagmar Mikulová

doi:10.4028/www.scientific.net/KEM.465.435

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 465Study of Fatigue Crack Growth and Threshold Values...

Study of Fatigue Crack Growth and Threshold Values in an Inconel 718 - René 41 Weld at High Temperature and Low Load Frequency

Abstract:

An evaluation of threshold values and fatigue crack growth (FCG) rates is a fundamental condition for an application of damage tolerance philosophy in numerous machinery components. This philosophy starts to be applied even in such problematic cases like aircraft engine blades. The paper contains results of an evaluation of FCG rates including threshold values in a heat resistant Inconel 718 / René 41 welds used in advanced manufacture processes of jet engine rotor blades. Measurement was performed at load asymmetry R = 0.05, temperature 700 oC, at low load frequency f = 0.3 Hz. Methodological approaches are mentioned. Results of FCG and particularly threshold values are discussed in connection with fractographical analyses. In addition, crack closure phenomenon and closure values are considered and discussed.

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Periodical:

Key Engineering Materials (Volume 465)

Pages:

435-438

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.465.435

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Online since:

January 2011

Authors:

Ivo Černý, Luboš Remar, Dagmar Mikulová

Keywords:

Elevated Temperature, Fatigue Crack Growth (FCG), Inconel 718 Superalloys, René 41 Superalloys, Threshold Values

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References

[1] R.K. Sidhu, N.L. Richards and M.C. Chaturvedi: Mater. Sci. Technol., Vol. 24, No. 5 (2008), pp.529-539.

Google Scholar

[2] K. Banerjee, N.L. Richards and M.C. Chaturvedi: Metall. Mater. Trans. A, Vol. 36, No. 7 (2005), pp.1881-1890.

Google Scholar

[3] J. Tsang, R.M. Kearsey, P. Au, D. Seo, S. Oppenheimer and W. Cao: Mater. High Temp., Vol. 27, No. 1 (2010), pp.79-88.

Google Scholar

[4] C. Mercer, S. Shademan and W.O. Soboyejo: J. Mater. Sci., Vol. 38, No. 2 (2003), pp.291-305.

Google Scholar

[5] H. Andersson and C. Persson: Int. J. Fatigue, Vol, 26, No. 3 (2004), pp.211-219.

Google Scholar

[6] M.R. Bache, W.J. Evans and M.C. Hardy: Int. J. Fatigue, Vol. 21 (1999), pp.69-77.

Google Scholar

[7] S. Ponnelle, B. Brethes and A. Pineau: European Structural Integrity Society, Vol. 29 (2002), pp.257-266.

Google Scholar

[8] I. Černý: Eng. Fract. Mech., Vol. 71, No. 4 (2004), pp.837-848.

Google Scholar

[9] Y. Matsuyama, N. Kawagoishi, Q.Y. Wang, K. Morino, E. Kondo and N. Yan: Key Eng. Mater., Vols. 353-358 (2007), pp.126-129.

DOI: 10.4028/www.scientific.net/kem.353-358.126

Google Scholar