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Very High Cycle Fatigue Behaviors and Surface Crack Growth Mechanism of Hydrogen-Embrittled AISI 304 Stainless Steels
Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
School of Mechanical Engineering, Yeungnam University, Daegu, Republic of Korea
Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
School of Mechanical Engineering, Kyungpook Nat’l University, Daegu, Republic of Korea
- 1 Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
- 2 School of Mechanical Engineering, Yeungnam University, Daegu, Republic of Korea
- 3 Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
- 4 School of Mechanical Engineering, Kyungpook Nat’l University, Daegu, Republic of Korea
Materials Sciences and Applications·Volume 09 (2018)·Pages 393–411·Published 10 April 2018·DOI10.4236/msa.2018.94027
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Abstract
The influence of hydrogen embrittlement on the fatigue behaviors of AISI 304 stainless steel is investigated. The fatigue endurance limits of the untreated and hydrogen-embrittled materials were almost the same at 400 MPa, and hydrogen embrittlement had little influence even though the sample contained about 8.1 times more hydrogen. Thus, the sensitivity of hydrogen gas in this material is very low. A surface crack initiation, growth, coalescence, and micro ridge model is proposed in this study. Slip line formation ⇒ microcrack formation ⇒ increases in the crack width, and blunting of the crack tip as it grows ⇒ formation of many slip lines because of deformation in the shear direction ⇒ growth of the crack in the shear direction, forming micro ridges, coalescence with adjacent cracks ⇒ continuous initiation, growth, coalescence, and ridge formation of surface cracks and specimen breakage.
KeywordsHydrogen-EmbrittledFatigue BehaviorsSurface Crack InitiationGrowthCoalescenceMicro Ridge FormationVHCF (Very High Cycle Fatigue)Fracture Surface Analysis
- Shin, H.S., Kim, K.H., Back, U.B. and Nahm, S.H. (2011) Development of Evaluation Technique for Hydrogen Embrittlement Behavior of Metallic Materials Using In-Situ SP Testing under Pressurized Hydrogen Gas Conditions. Transactions of the Korean Society of Mechanical Engineers A, 35, 1377-1382. https://doi.org/10.3795/KSME-A.2011.35.11.1377
- Suh, C.M., Nahm, S.H., Kim, J.H. and Pyun, Y.S. (2016) A Study on the VHCF Fatigue Behaviors of Hydrogen Attacked Inconel 718 Alloy. Transactions of the Korean Society of Me-chanical Engineers A, 40, 637-646. https://doi.org/10.3795/KSME-A.2016.40.7.637
- Nahm, S.H., Baek, U.B., Suh, C.M. and Pyun, Y.S. (2017) Study on VHCF Fatigue Behaviors and UNSM Effects of Hydrogen Attached STS 316L. Transactions of the Korean Society of Mechanical Engineers A, 41, 1011-1020. https://doi.org/10.3795/KSME-A.2017.41.11.1011
- Bechtle, S., Kumar, M., Somerday, B.P., Launey, M.E. and Ritchie, R.O. (2009) Grain-Boundary Engineering Markedly Reduces Susceptibility to Intergranular Hydrogen Embrittlement in Metallic Materials. Acta Materialia, 57, 4148-4157. https://doi.org/10.1016/j.actamat.2009.05.012
- Cotterill, P.J. and King, J.E. (1991) Hydrogen Embrittlement Contributions to Fatigue Crack Growth in a Structural Steel. International Journal of Fatigue, 13, 447-452. https://doi.org/10.1016/0142-1123(91)90478-H
- Bruchhausen, M., Fischer, B., Ruiz, A., Gonzalez, S., Hahner, P. and Soller, S. (2015) Impact of Hydrogen on the High Cycle Fatigue Behavior of Inconel 718; a Symmetric Push-Pull Mode at Room Temperature. International Journal of Fatigue, 70, 137-145. https://doi.org/10.1016/j.ijfatigue.2014.09.005
- Kouters, M.H.M., Slot, H.M., van Zwieten, W. and van der Veer, J. (2014) The Influence of Hydrogen on the Fatigue Life of Metallic Leaf Spring Components in a Vacuum Environment. International Journal of Fatigue, 59, 309-314. https://doi.org/10.1016/j.ijfatigue.2013.09.013
- Karsch, T., Clausen, B. and Zoch, H.W. (2014) Influence of Hydrogen and Deoxidation Technique on the Fatigue Behaviour of Steel SAE 52100 in the VHCF Regime. 6th International Conference on VHCF, Chengdu, 15-18 October 2014.
- Suh, C.M., Lee, M.H. and Pyoun, Y.S. (2010) Fatigue Characteristics of SKD-61 by Ultrasonic Nanocrystal Surface Modification Technology under Static Load Variation. International Journal of Modern Physics B, 24, 2645-2650. https://doi.org/10.1142/S0217979210065404
- Suh, C.M., Song, G.H., Suh, M.S. and Pyoun, Y.S. (2007) Fatigue and Mechanical Characteristics of Nanostructured Tool Steel by Ultrasonic Cold Forging Technology. Materials Science & Engineering A, 443, 101-106.