ICSID 2018

Dubrovnik, Croatia, October 2 – 5, 2018

Hydrogen embrittlement of stainless steels

Francesco Iacoviello, University of Cassino and Southern Lazio

In the last decades, the effects of hydrogen embrittlement have been extensively investigated, considering the role of the “internal” and “external” hydrogen, the influence of the loading conditions (static, quasi static, cyclic loads) and of the environment, the physical interaction between hydrogen and the different crystal systems (e.g. fcc for austenitic steels and bcc for ferritic grades), the role played by the temperature and by the different physical phenomena, like hydrogen diffusion and hydrogen trapping, the influence of the alloys microstructure. Considering all these parameters and all these phenomena, in this presentation the phenomena related to the hydrogen embrittlement mechanisms in stainless steels are reviewed, mainly focusing the influence of hydrogen on mechanical properties and the more frequently adopted testing procedures.