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

  1. Álvarez Díaz, Guillermo 1
  2. Rodríguez, Pablo Vinjoy
  3. López Gallego, Mario 1
  4. Rodríguez González, Cristina 1
  1. 1 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

Actas:
The 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment

Año de publicación: 2018

Tipo: Aportación congreso

DOI: 10.3390/PROCEEDINGS2231418 GOOGLE SCHOLAR lock_openAcceso abierto editor

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.