About this Abstract | 
  
   
    | Meeting | 
    7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
       | 
  
   
    | Symposium 
       | 
    ICME 2023
       | 
  
   
    | Presentation Title | 
    Microstructure-based Modelling Approach to Determine Hydrogen Diffusion and Trapping in Steels | 
  
   
    | Author(s) | 
    Maribel  Arribas , Ana Rosa  Carrillo , Ane  Jimenez, Jean Baptiste  Jorcin, Pello  Uranga, Nerea  Isasti | 
  
   
    | On-Site Speaker (Planned) | 
    Ane  Jimenez | 
  
   
    | Abstract Scope | 
    
In this work, a hydrogen diffusion and trapping model has been coupled with electrochemical permeation measurements to characterize de diffusion and trapping parameters associated with a pipeline steel. The obtention of hydrogen trapping parameters is not straightforward, especially for complicated microstructures with multiple trapping sites, and generally the existing models consider a high number of fitting parameters. In the present model, the number of fitting parameters has been reduced by defining new microstructure-based functions which give a physical meaning to parameters which have been typically treated as fitting parameters. As a result, a better estimation of the hydrogen diffusion and trapping parameters is obtained, providing an improved modelling framework for the definition of the appropriate microstructure features that result in a better performance of the pipeline steels in contact with hydrogen.  | 
  
   
    | Proceedings Inclusion? | 
    Planned: Other  |