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

Proceedings

Tomás Eduardo García Suárez¹  Francisco Javier Belzunce Varela²  Guillermo Álvarez Díaz²  Cristina. Rodríguez González² 

[1] Know-How Innovative Solutions S.L. Espacio Tecnológico Campus, C/Pedro Puig Adam, S/N, 33203 Gijón, Spain;SIMUMECAMAT Research Group, Edificio Departamental Oeste, University of Oviedo, 7.1.17. Campus Universitario, 33203 Gijón, Asturias, Spain;

关键词: hydrogen embrittlement;    fracture toughness;    hydrogen embrittlement;    displacement rate;   

DOI  :  10.3390/proceedings2231417

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown