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

Proceedings

Rodríguez, Pablo Vinjoy¹  Díaz, Guillermo Álvarez²  Gallego, Mario López³ 

[1] Author to whom correspondence should be addressed.;Department of Construction and Manufacturing Engineering, University of Oviedo, C/Pedro Puig Adam, West Building nº7, 33203 Gijón, Asturias, Spain;Presented at the 2nd International Research Conference on Sustainable Energy, Engineering, Materials and Environment (IRCSEEME), Mieres, Spain, 25–27 September 2018

关键词: hydrogen embrittlement;    fracture toughness;    strain rate;    SPT;    notched samples;   

DOI  :  10.3390/proceedings2231418

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY