The effect of high pressure hydrogen on crack growth of 2.25Cr1Mo steel at elevated temperatures
Metal exposure to high pressure and high temperature hydrogen can result in the phenomenon of hydrogen attack which leads to severe degradation of the material's mechanical properties. It is of industrial relevance to investigate the effect of this aggressive environment on the creep crack growth behaviour of a ferritic steel, 2.25 Cr1Mo, commonly used in petro-refinery plant. This poster covers the analysis of the project results to date, most of which are from the first phase, involving CT test in air, and notched tube tests. In these latter tests, two types of loading and various notch geometries were investigated. Post-test measurements were used to calibrate the potential drop method which is used to monitor crack growth in both cases. Development of the facilities required for testing with 200Bar hydrogen at 600 C is at an advanced stage and results available from these tests are also outlined.
Bibliographic Reference: Paper presented: Junior Euromat, Lausanne (CH), August 24-28, 1992
Availability: Text not available
Record Number: 199211138 / Last updated on: 1994-11-29
Original language: en
Available languages: en