Analysis of the Hydrogen Induced Cracking by Means of the Small Punch Test: Effect of the Specimen Geometry and the Hydrogen Pre-Charge Mode
- Álvarez Díaz, Guillermo 1
- Rodríguez, Pablo Vinjoy
- López Gallego, Mario 1
- Rodríguez González, Cristina 1
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1
Universidad de Oviedo
info
Año de publicación: 2018
Tipo: Aportación congreso
Resumen
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.