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

Proceedings

González, Cristina. Rodríguez¹  Suárez, Tomás Eduardo García²  Varela, Francisco Javier Belzunce³  Díaz, Guillermo Álvarez⁴ 

[1] Author to whom correspondence should be addressed.;Know-How Innovative Solutions S.L. Espacio Tecnológico Campus, C/Pedro Puig Adam, S/N, 33203 Gijón, Spain;Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 September 2018.;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

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 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】

CC BY