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Analysis of the Hydrogen Induced Cracking by Means of the Small Punch Test: Effect of the Specimen Geometry and the Hydrogen Pre-Charge Mode

Department of Construction and Manufacturing Engineering, University of Oviedo, C/Pedro Puig Adam, West Building nº7, 33203 Gijón, Asturias, Spain
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Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 September 2018.
Proceedings 2018, 2(23), 1418; https://doi.org/10.3390/proceedings2231418
Published: 23 November 2018
This paper presents a simplified procedure to analyse the Hydrogen Induced Cracking (HIC) of structural steels by means of the Small Punch Test (SPT). Two types of notched specimens were used: one with through-thickness lateral notch and another with surface longitudinal notch. The results for conventional specimens were compared with those for hydrogen pre-charged specimens. For this purpose, two different methods to introduce hydrogen in the specimens were used: cathodic/electrochemical pre-charging and pressurized gaseous hydrogen pre-charging. The results obtained with both methods are also discussed.
Keywords: hydrogen embrittlement; fracture toughness; strain rate; SPT; notched samples hydrogen embrittlement; fracture toughness; strain rate; SPT; notched samples
MDPI and ACS Style

Díaz, G.Á.; Rodríguez, P.V.; Gallego, M.L.; González, C.R. Analysis of the Hydrogen Induced Cracking by Means of the Small Punch Test: Effect of the Specimen Geometry and the Hydrogen Pre-Charge Mode. Proceedings 2018, 2, 1418.

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