skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The development of in situ fracture toughness evaluation techniques in hydrogen environment

Journal Article · · International Journal of Hydrogen Energy
ORCiD logo [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
+ Show Author Affiliations

Reliability of hydrogen pipelines and storage tanks is significantly influenced by the mechanical performance of the structural materials exposed in the hydrogen environment. Fracture behavior and fracture toughness are of specific interest since they are relevant to many catastrophic failures. However, many conventional fracture testing techniques are difficult to be realized under the presence of hydrogen. Thus it is desired to develop novel in situ techniques to study the fracture behavior of structural materials in hydrogen environments. In this study, special testing apparatus were designed to facilitate in situ fracture testing in H2. A torsional fixture was developed to utilize an emerging fracture testing technique, Spiral Notch Torsion Test (SNTT). The design concepts will be discussed. Preliminary in situ testing results indicated that the exposure to H2 significantly reduces the fracture toughness of 4340 high strength steels by up to 50 percent. Furthermore, SNTT tests conducted in air demonstrated a significant fracture toughness reduction in samples subject to simulated welding heat treatment using Gleeble, which illustrated the effect of welding on the fracture toughness of this material.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
Sponsoring Organization:
USDOE; Work for Others (WFO)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1286757
Alternate ID(s):
OSTI ID: 1556205
Journal Information:
International Journal of Hydrogen Energy, Vol. 40, Issue 4; ISSN 0360-3199
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

References (7)

Using torsional bar testing to determine fracture toughness journal November 2000
A New Approach to Evaluate Fracture Toughness of Structural Materials journal November 2004
An innovative technique for evaluating fracture toughness of graphite materials journal October 2008
Investigating fracture behavior of polymer and polymeric composite materials using spiral notch torsion test journal March 2013
Evaluation of Methods to Predict Safe Welding Conditions and Maximum HAZ Hardness in Steel Welding journal February 1995
A new approach for evaluating thin film interface fracture toughness journal June 2006
Literature Survey of Gaseous Hydrogen Effects on the Mechanical Properties of Carbon and Low Alloy Steels journal July 2009

Cited By (1)

Deposition of Ni–NiO nanoparticles on the reduced graphene oxide filled polypyrrole: evaluation as cathode catalyst in microbial fuel cells journal January 2019

Similar Records

Related Subjects

08 HYDROGEN
spiral notch torsion test
fracture otughness
hydrogen embrittlement
high pressure hydrogen in-situ test