Degradation of Material Properties in High Pressure Hydrogen

In this section

Back to Core Research Programme AMorph – 4D Printing for Field Morphing Structures Automation of Composite and Hybrid Joining Process Coaxial Wire Additive Manufacturing Processes and In-Line Monitoring Tools Development of Coded Excitation Technique for Non-Metallic Pipes Inspection Development of Digital Twin technology as a demonstrator for real-time integrity assessment of crack growth in tensile specimens Development of Friction Stir Welding (FSW) for Hydrogen Fuel Storage Tanks Development of Leak-Before-Break Hydrogen Storage Composite Pressure Vessels With Polymeric Liner Establishing Assessment Methods for Determining Safe Service Limits of High-Temperature Materials in Extreme Environments Fracture toughness in aggressive environments: effect of crack monitoring techniques on test results In-process detection and non-destructive testing of electron beam weld imperfections Internal Bore Coatings for Applications in Corrosion and Hydrogen Environment Joining of Additively Manufactured Materials Long term behaviour of polymeric liner materials/coatings in hydrogen service Techniques for High Temperature Ultrasonic Inspection of Arc Welding Ultimate Leverage Fund

Project Code: 0902-09

Objectives

Investigate the microstructural mechanisms involved in HEE.

Enable further understanding of suitable material choices for hydrogen service.

Project Outline

A number of austenitic alloys will be tested over a range of pressures (ambient to 1000 bar) and temperatures (-50 to +85C) in order to develop an understanding of the effect of these variables on material properties including tensile and fatigue properties. Through post-test analysis of fracture faces and presence of measurement of the amount of strain induced martensite understanding of HEE will be increased.

Areas of research interest found by the HYDEE collaborative programme will also be explored, partly in order to validate our test facility with currently published results but also to allow TWI to investigate further areas of interest not covered by the HYDEE programme.

Low cycle fatigue testing will be of particular interest as there is currently very little data available in the public domain concerning the effect of hydrogen on fatigue lives. There is some evidence that fatigue lives are significantly reduced in hydrogen environments.

Relevant Industry Sectors

Automotive, Power, Construction and Engineering

Technical and Economic Benefits

A greater understanding of the mechanisms involved in HEE.

Enhanced ability to select or develop materials and fabrication methods for components potentially leading to more economical components.