In situ observations of transgranular crack propagation in high-manganese steel

In situ observations of transgranular crack propagation in high-manganese steel

Crack propagation in high-Mn steel was investigated using in situ transmission electron microscopy. Preferential slips developed in the early stages of deformation on {111}, followed by the formation of a crack, which propagated along the pre-developed slip traces. A sharp corner was observed at the...

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Bibliographic Details
Published in:Scripta materialia Vol. 100; pp. 32 - 35
Main Authors: Baik, Sung-Il, Ahn, Tae-Young, Hong, Woong-Pyo, Jung, Yeon-Seung, Lee, Young-Kook, Kim, Young-Woon
Format: Journal Article
Language:English
Published: Elsevier Ltd 15-04-2015
Subjects:
Corners
Crack propagation
Dislocation
Formations
Fracture
Fracture mechanics
In situ TEM
Planes
Ripples
Slip
Steels
Transgranular cracks
Twinning
TWIP steel
Twinning
Fracture
TWIP steel
In situ TEM
Dislocation
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Summary:Crack propagation in high-Mn steel was investigated using in situ transmission electron microscopy. Preferential slips developed in the early stages of deformation on {111}, followed by the formation of a crack, which propagated along the pre-developed slip traces. A sharp corner was observed at the crack tip along two adjoining {111} planes. Surface ripples developed when the tip of the crack crossed pre-existing twins on the crack path, which was frequently observed in the surface during the final stage of fracture.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2014.12.005