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Micromechanics of high temperature hydrogen attack
Author(s) -
Schlögl Sabine M.,
Van der Giessen Erik
Publication year - 2001
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.299
Subject(s) - micromechanics , hydrogen , petrochemical , scale (ratio) , materials science , forensic engineering , nuclear engineering , engineering , chemistry , composite material , physics , waste management , organic chemistry , quantum mechanics , composite number
Hydrogen attack is a material degradation process that occurs at elevated temperatures in hydrogen‐rich environments, such as found in petrochemical installations. Weldments in components such as reactor vessels are particularly susceptible to hydrogen attack. This paper discusses a multi‐scale micromechanics modelling approach in which the chemico‐mechanical damage processes at sub‐micron scale are coupled to the macroscopic behaviour through a series of size‐scale transitions. A simulation of hydrogen attack in a welded reactor serves as an illustration of the approach. Copyright © 2001 John Wiley & Sons, Ltd.