MultiHy is a project funded by the EU’s 7th Framework Program under the theme “Nanosciences, Nanotechnologies, Materials and new Production Technologies”. The project has a combined budget of 5.3 mil € (including EU and partner contributions) and will run from the 1st of May 2011 until the 30th of April 2015.

The aim of MultiHy is to develop industrially-relevant computational models to assist in the evaluation of the susceptibility of complex materials to hydrogen embrittlement under realistic service conditions. Hydrogen embrittlement is a serious and costly industrial problem that affects a diverse range of engineering materials in common environments. There is an urgent need to develop a better understanding of hydrogen embrittlement and to develop tools to evaluate the impact of hydrogen on the structural integrity of materials and components. MultiHy aims to achieve this by developing an advanced multiscale framework and applying it to real industrial problems involving hydrogen embrittlement.

What is hydrogen embrittlement?

Hydrogen embrittlement is the degradation of the mechanical properties of materials, usually manifested by sub-critical cracking, due to the presence of dissolved atomic hydrogen. All structural metals are susceptible to hydrogen embrittlement to some extent, with susceptibility generally increasing with yield strength. The hydrogen may come from a variety of sources: it may be either absorbed from the environment or produced by some chemical reaction on the surface of the metal (e.g. corrosion). Given the wide range of service environments in which this may occur, this represents a very serious and costly industrial problem.