Reduction in Fretting Fatigue Strength of Austenitic Stainless Steels due to Internal Hydrogen

Abstract:

Fretting fatigue is one of the major factors in the design of hydrogen equipment. The effect of internal hydrogen on the fretting fatigue strength of austenitic stainless steels was studied. The internal hydrogen reduced the fretting fatigue strength. The reduction in the fretting fatigue strength became more significant with an increase in the hydrogen content. The reason for this reduction is that the internal hydrogen assisted the crack initiation. When the fretting fatigue test of the hydrogen-charged material was carried out in hydrogen gas, the fretting fatigue strength was the lowest. Internal hydrogen and gaseous hydrogen synergistically induced the reduction in the fretting fatigue strength of the austenitic stainless steels. In the gaseous hydrogen, fretting creates adhesion between contacting surfaces where severe plastic deformation occurs. The internal hydrogen is activated at the adhered part by the plastic deformation which results in further reduction of the crack initiation limit.

• Periodical: Advanced Materials Research (Volumes 891-892)
• Pages: 891-896
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.891-892.891
• Online since: March 2014
• Authors: Ryosuke Komoda*, Naoto Yoshigai, Masanobu Kubota, Jader Furtado
• Keywords: Austenitic Stainless Steel, Fretting Fatigue, Hydrogen

References

[1] M. Kubota, N. Noyama, C. Sakae, Y. Kondo, Fretting fatigue in hydrogen gas, Tribology International. 39 (2006) 1241-1247.

DOI: 10.1016/j.triboint.2006.02.014

[2] M. Kubota, Y. Tanaka, Y. Kondo, The effect of hydrogen gas environment on fretting fatigue strength of materials used for hydrogen utilization machines, Tribology International. 42 (2009) 1352-1359.

DOI: 10.1016/j.triboint.2009.04.006

[3] M. Kubota, K. Kuwada, Y. Tanaka, Y. Kondo, Mechanisms of reduction of fretting fatigue limit caused by hydrogen gas in SUS304 austenitic stainless steel, Tribology International. 44 (2011) 1495-1502.

DOI: 10.1016/j.triboint.2010.11.004

[4] R. Komoda, M. Kubota, Y. Kondo, J. Furtado, Fundamental mechanisms causing reduction in fretting fatigue strength by hydrogen (Effect of hydrogen on small crack initiation at the adhered spot), Trans. JSME. 79 (2013) 536-545.

DOI: 10.1299/kikaia.79.536

[5] M. Kubota, Y. Shiraishi, R. Komoda, Y. Kondo, J. Furtado, Considering the mechanisms causing reduction of fretting fatigue strength by hydrogen, Proceedings of 19th European Conference on Fracture (ECF19). (2012) paper ID: 281.

[6] Y. Sakamoto, H. Katayama, The electrochemical determination of diffusivity and solubility of hydrogen in an austenitic type 304 steel, Journal of the Japan Institute of Metal and Materials. 46 (1982) 805-814.

DOI: 10.2320/jinstmet1952.46.8_805