The anisotropic nature of local crack stability in BCC crystals

Katz, Y.; Chen, X.; Lu, M.; Lanxner, M.

doi:10.1016/0013-7944(92)90300-4

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1994

2001

Publication Types

Select...

Book3

Article2

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Internal Hydrogen-induced Embrittlement in Iron Single Crystals

Wang

Multiscale Deformation and Fracture in Materials and Structures

View full text Add to dashboard Cite

A thermodynamic model for internal hydrogen-induced embrittlement (HIE) in single crystals is proposed. The model is based on the assumption that the ductile versus brittle transition is controlled by the competition between dislocation emission from the crack tip and cleavage decohesion of the lattice. Embrittlement in single crystals is induced by segregation of hydrogen in solid solution to the crack tip and/or the fracture surfaces during separation, which reduces the cohesive energy of the lattice. This process will occur when the mobility of hydrogen atoms is high so that a surface excess of hydrogen can be built up during separation. The model predictions for hydrogen induced cleavage in iron single crystals are presented.

show abstract