Fatigue crack growth with hydrogen (H) influence under cathodic protection (CP) and H₂S conditions will be examined and modelled at length scales ranging from nano to macro. The project aims to investigate, understand and measure the influence of hydrogen on fatigue crack growth. To achieve this, in situ fatigue testing at the macro-scale under hydrogen-charging conditions that are representative of service conditions, combined with advanced nano- and micro- characterization of the cracks and plastic zones will be used. These results will give input to a hierarchical model framework to address the combined degradation effect from fatigue and hydrogen.

The project will establish Jämtland / Härjedalen, Västernorrland and Tröndelag as one of northern Europe's center for additive manufacturing and strengthening companies in the region and developing new products.

High strength hydrogen resistant alloys (HyResMat) is a project within the COMET-K2-Center MPPE. Our Group at NTNU is a partner of the project which has more than 40 scientific and 70 industrial partners. The work package NTNU is involved is focusing on the hydrogen embrittlement of Ni-base corrosion resistant alloys (CRA).