Imperial College London
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DrEmilioMartinez-Paneda

Faculty of Engineering, Department of Civil and Environmental Engineering

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 8188e.martinez-paneda Website

 
 
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Location

 

249Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Valverde-González:2022:10.1016/j.ijhydene.2022.07.117,
author = {Valverde-González, A and Martínez-Pañeda, E and Quintanas-Corominas, A and Reinoso, J and Paggi, M},
doi = {10.1016/j.ijhydene.2022.07.117},
journal = {International Journal of Hydrogen Energy},
pages = {1--17},
title = {Computational modelling of hydrogen assisted fracture in polycrystalline materials},
url = {http://dx.doi.org/10.1016/j.ijhydene.2022.07.117},
volume = {47},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We present a combined phase field and cohesive zone formulation for hydrogen embrittlement that resolves the polycrystalline microstructure of metals. Unlike previous studies, our deformation-diffusion-fracture modelling framework accounts for hydrogen-microstructure interactions and explicitly captures the interplay between bulk (transgranular) fracture and intergranular fracture, with the latter being facilitated by hydrogen through mechanisms such as grain boundary decohesion. We demonstrate the potential of the theoretical and computational formulation presented by simulating inter- and trans-granular cracking in relevant case studies. Firstly, verification calculations are conducted to show how the framework predicts the expected qualitative trends. Secondly, the model is used to simulate recent experiments on pure Ni and a Ni–Cu superalloy that have attracted particular interest. We show that the model is able to provide a good quantitative agreement with testing data and yields a mechanistic rationale for the experimental observations.
AU  - Valverde-González,A
AU  - Martínez-Pañeda,E
AU  - Quintanas-Corominas,A
AU  - Reinoso,J
AU  - Paggi,M
DO  - 10.1016/j.ijhydene.2022.07.117
EP  - 17
PY  - 2022///
SN  - 0360-3199
SP  - 1
TI  - Computational modelling of hydrogen assisted fracture in polycrystalline materials
T2  - International Journal of Hydrogen Energy
UR  - http://dx.doi.org/10.1016/j.ijhydene.2022.07.117
UR  - https://doi.org/10.1016/j.ijhydene.2022.07.117
UR  - http://hdl.handle.net/10044/1/99708
VL  - 47
ER  -
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