Modelling of irradiation-induced hardening in metals using dislocation dynamics

A new simulation technique (three-dimensional dislocation dynamics) enabling the capture of a hardening effect in metals due to irradiation is reported. When bombarded with high-energy particles, metals accrue internal damage. In irradiated Pd, for example, damage takes the form of interstitial loops. Such loops are nano-sized and typically have a high number density. The stress field of a loop is given from dislocation theory. It is shown here the hardening is due to the elastic interaction of gliding dislocations with a high number or spatially dispersed interstitial loops. Results are found to correlate well with experiments.


Published in:
Philosophical Magazine Letters, 81, 9, 583-593
Year:
2001
ISSN:
0950-0839
ISBN:
0950-0839
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-09-13


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