Paper Info
Revista
Theoretical and Applied Fracture MechanicsAño de publicación
2016Tematica
Fragilización por hidrógeno
Small Punch Test
Ensayos Alternativos
Caracterización mecánica
Small punch test methodologies for the analysis of the hydrogen embrittlement of structural steels
García Suarez, Tomás Eduardo | Arroyo Martínez, Borja | Rodríguez González, Cristina | Belzunce Varela, Francisco Javier | Álvarez Laso, Jose Alberto |Abstract
In the present study, a new small punch test (SPT) methodology has been used to analyse the effect of hydrogen embrittlement
on the tensile properties of three different grades of CrMoV steel: the base metal (CrMoV-1), weld metal
(CrMoV-2) and this same weld metal subjected to an intermediate heat treatment (CrMoV-3). SPT results were compared
with those obtained in standard tensile tests carried out in a hydrogen environment. Moreover, a new SPT methodology
was used to analyse the environmental effects on a CrNiMn steel under cathodic protection and cathodic charge.
Results obtained shows the usefulness of the SPT to estimate the grade of deterioration induced by hydrogen embrittlement,
especially when a lack of testing material makes impossible the test of standard specimens.