Dynamics of Drag of Self-interstitial Clusters by an Edge Dislocation in Iron.

Journal Article · Fri Dec 31 23:00:00 EST 2004 · Materials Science and Engineering A

DOI:https://doi.org/10.1016/j.msea.2005.03.066· OSTI ID:1003352

Rong, Zhouwen ^[1]; Bacon, David J ^[1]; Osetskiy, Yury N ^[2]

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1. University of Liverpool
2. ORNL

Self-interstitial atom (SIA) clusters are created in metals under fast neutron irradiation and are believed to interact with dislocations and increase the flow stress. In this paper, atomic-scale computer simulations are used to investigate the dynamic interaction between an edge dislocation and small SIA loops that do not intersect the dislocation glide plane and whose Burgers vector is parallel to it. Such loops can be dragged by a moving dislocation and this effect is simulated as a function of temperature and loop size, spacing, stand-off distance and Burgers vector orientation. The results can be understood in terms of the one-dimensional mobility of SIA loops.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1003352
• Journal Information: Materials Science and Engineering A, Journal Name: Materials Science and Engineering A Vol. 400-401; ISSN 0921-5093
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMS
BURGERS VECTOR
COMPUTERIZED SIMULATION
DISLOCATIONS
EDGE DISLOCATIONS
FAST NEUTRONS
FLOW STRESS
IRON
IRRADIATION
ORIENTATION