Character of Fatigue Damage under Axial, Torsional and Biaxial Loading of 316L Stainless Steel

Abstract:

Characteristic features of fatigue damage of 316L austenitic stainless steel cyclically strained axially in tension-compression, reversed torsion and combined axial-torsional mode were studied. All loading modes resulted in the formation of persistent slip markings (PSMs). Predominantly one slip system was activated in the case of axial and torsional loading while at biaxial loading, activation of several slip systems was involved. PSMs acted as sites of multiple fatigue crack initiation. The path of subsequent crack growth at a macroscopic scale differed considerably in dependence on loading mode and applied amplitude. The hardening-softening curves and fatigue life curves were evaluated and results were compared and discussed in terms of the type of applied loading.

• Periodical: Defect and Diffusion Forum (Volume 405)
• Pages: 264-270
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.405.264
• Online since: November 2020
• Authors: Alice Chlupová*, Ladislav Poczklán, Jiří Man, Veronika Mazánová, Milan Heczko, Tomáš Kruml
• Keywords: 316L Austenitic Steel, Axial Loading, Crack Growth, Crack Initiation, Fatigue, Torsional Loading

References

[1] N. Shamsaei, et al., Multiaxial fatigue evaluation using discriminating strain paths, Int. J. Fatigue 33 (2011) 597-609.

DOI: 10.1016/j.ijfatigue.2010.11.002

[2] Y. Dong, et al., Multiaxial ratcheting of 20 carbon steel: Macroscopic experiments and microscopic observations, Mater. Charact. 83 (2013) 1-12.

DOI: 10.1016/j.matchar.2013.05.014

[3] V. Mazánová, et al., Cyclic response and early damage evolution in multiaxial cyclic loading of 316L austenitic steel, Int. J. Fatigue 100 (2017) 466-476.

DOI: 10.1016/j.ijfatigue.2016.11.018

[4] L. Pejkowski, et al., High-cycle fatigue behavior of austenitic steel and pure copper under uniaxial, proportional and non-proportional loading, Strojniski Vestn.-J. Mech. Eng. 60, 9 (2014) 549-560.

DOI: 10.5545/sv-jme.2013.1600

[5] M. Karol, et al., Fatigue crack growth in 316L under uniaxial and torsional loading, In Proc. 25th International Conference on Metallurgy and Materials (Metal 2016), 2016, 568-573.

[6] M. Karol, et al., Fatigue crack initiation and growth in 316L steel in torsional cyclic loading, In Proc. 23rd Int. Conf. Engineering Mechanics 2017, 2017, 434-437.

[7] T. Kruml, et al., Dislocation structures in the bands of localised cyclic plastic strain in austenitic 316L and austenitic-ferritic duplex stainless steels, Acta Mater. 45, 12 (1997) 5145-5151.

DOI: 10.1016/s1359-6454(97)00178-x

[8] J. Man, et al., Stability of austenitic 316L stainless steel against martensite formation during cyclic straining, Proc. Eng. 10 (2011) 1279-1284.

DOI: 10.1016/j.proeng.2011.04.213