Plastic Zone around a Fatigue Crack Determined by the FEM and a Nanoindentation Technique

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Plastic zone around a fatigue crack in AISI 304 stainless steel was studied experimentally using nanoindentation and numerically by the finite element analysis. Results obtained from one experimental observation of crack propagating under constant amplitude loading showed that nanohardness can be correlated to strain hardening caused by the cyclic deformation in the vicinity of the crack. However, for the material chosen for this study, exact plastic zone shape is hard to evaluate due to the scattering of experimental results.

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69-72

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September 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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[1] J. Schijve, Fatigue of Structures and Materials, Kluwer Academic Publishers, Dordrecht, (2004).

Google Scholar

[2] T. Cook, D. Davidson, J. Lankford, Fatigue Crack Tip Plasticity, in: L.F. Impellizzeri (Ed. ), Cyclic Stress-Strain and Plastic Deformation Aspects of Fatigue Crack Growth, ASTM, Philadelphia, 1976, p.36–55.

DOI: 10.1520/stp637-eb

Google Scholar

[3] J. Bär, S. Seifert, Investigation of Energy Dissipation and Plastic Zone Size during Fatigue Crack Propagation in a High-Alloyed Steel. Proc. Mat. Sci. 3 (2014) 408–413.

DOI: 10.1016/j.mspro.2014.06.068

Google Scholar

[4] C. Bathias, R.M. Pelloux, Fatigue Crack Propagation in Martensitic and Austenitic Steels. Met. Trans. 4 (1973) 1265–1273.

DOI: 10.1007/bf02644521

Google Scholar

[5] W.C. Oliver, G.M. Pharr, Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology. J. Mater. Res. 19 (2004) 3–20.

DOI: 10.1557/jmr.2004.19.1.3

Google Scholar

[6] V. Oliva, A. Materna, O. Šimek, J. Siegl, Cyclic Plastic Strain at the Curved Fatigue Crack Front in CCT Specimens of Various Thicknesses, in: Ľ. Parilák (Ed. ), Fractography 2006, IMR SAS, Košice, 2006, p.115–123.

Google Scholar