Review of Hydrogen Diffusion Models for the Analysis of Hydrogen Embrittlement of Materials
Hydrogen-assisted fracture (HAF) of metals is the problem of major concern in structural integrity.HAF is rate limited by hydrogen accumulation in fracture sites in metals.Diffusion is a relevant stage of transport that supplies hydrogen to fracture process zones.Addressing the purposes of HAF analysis,modelling of hydrogen diffusion with account for physical-mechanical fields and factors of material microstructure (hydrogen trapping) is revisited.Generalised system of equations of trapping-affected hydrogen diffusion is derived from the kinetics principles.For circumstances,which are relevant to plenty of engineering HAF cases,specialised models of microstructure informed stress-strain-assisted hydrogen diffusion in metals are retrieved and collated under the prism of their suitability for HAF analyses.
Hydrogen assisted fracture Hydrogen diffusion Modelling
Jesús Toribio Viktor Kharin
University of Salamanca,Campus Viriato,49022 Zamora,Spain
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）