Effect of the Strain Rate on the Fracture Behaviour of High Pressure Pre-Charged Samples

Effect of the Strain Rate on the Fracture Behaviour of High Pressure Pre-Charged Samples

<b> </b>The aim of this work is to study the effect of the displacement rate on the hydrogen embrittlement of two different structural steels grades used in energetic applications. With this purpose, samples were pre-charged with gaseous hydrogen at 19.5 MPa and 450 °C for 21 h. Then, fr...

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Bibliographic Details
Main Authors: Guillermo Álvarez Díaz, Tomás Eduardo García Suárez, Cristina. Rodríguez González, Francisco Javier Belzunce Varela
Format: Article
Language:English
Published: MDPI AG 2018-12-01
Series:Proceedings
Subjects:
hydrogen embrittlement
fracture toughness
displacement rate
Online Access:https://www.mdpi.com/2504-3900/2/23/1417
Description
Summary:<b> </b>The aim of this work is to study the effect of the displacement rate on the hydrogen embrittlement of two different structural steels grades used in energetic applications. With this purpose, samples were pre-charged with gaseous hydrogen at 19.5 MPa and 450 °C for 21 h. Then, fracture tests of the pre-charged specimens were performed, using different displacement rates. It is showed that the lower is the displacement rate and the largest is the steel strength, the strongest is the reduction of the fracture toughness due to the presence of internal hydrogen.
ISSN:2504-3900

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