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research article
In situ transmission electron microscopy of the interaction between a moving dislocation and obstacles of dislocation character in pure iron
Haghighat, S. M. Hafez
•
Schaeublin, R.
In this study, we report our observation of the interaction between a moving dislocation and an obstacle of dislocation character in pure bcc-Fe using a TEM in situ straining experiment at room temperature. Our observations reveal that the interaction of a 1/2111 dislocation with a dislocation debris leads to a dislocation loop at the obstacle by Orowan mechanism. Hence, the strength of these obstacles is estimated to be in the range of Gb/L, which is higher than the strengthening induced by different nanometric defects of similar size.
Type
research article
Web of Science ID
WOS:000324670200002
Authors
Haghighat, S. M. Hafez
•
Schaeublin, R.
Publication date
2013
Publisher
Published in
Volume
93
Issue
10
Start page
575
End page
582
Peer reviewed
REVIEWED
Available on Infoscience
November 4, 2013
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