TY  - CONF
A1  - Kannengießer, Thomas
T1  - Crack resistance of supermartensitic steel pipeline welds in offshore industry
T2  - Conference Welding and Related Inspection Technologies, IIW
N2  - The increasing application of supermartensitic steels for welded pipelines is an economical alternative to the hitherto used higher-alloyed materials in the North Sea oil and gas indus-try. Failure in such constructions must at any rate be excluded for economical and ecologi-cal reasons. The application of these steels for the transport of corrosive mixtures may, however, involve hydrogen pickup with subsequent hydrogen-assisted stress corrosion cracking. It is therefore necessary not only to assure the weldability, but particularly to have best possible knowledge of the service behaviour and of the failure risk. In order to ensure the transferability of test results to real joined components, innovative test methods are in-creasingly required to be incorporated into a closed test sequence. It will be demonstrated how it is possible to gain significant advantages from the direct comparison between ex-perimentally determined results from component weld tests on the one hand and material-specific data from small-scale tests on the other hand and numerical simulations. These data that have now been made available are of major importance for industrial applications and are considered to provide a sound basis for realistic lifetime assessments.
T2  - Conference Welding and Related Inspection Technologies, IIW
CY  - Stellenbosch, South Africa
DA  - 08.03.2006
KW  - Supermartensitics
KW  - Hydrogen pickup
KW  - Hydrogen diffusion
KW  - Permeation experiments
KW  - Component tests
KW  - Numerical simulation
KW  - Closed test sequence
PY  - 2006
SP  - 1
EP  - 14
PB  - Beta Products cc
CY  - Lyttelton, South Africa
AN  - OPUS4-38925
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -