ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper describes the computer simulation of irradiation growths induced by neutronirradiations in zirconium using a combination of Molecular Dynamics (MD) and Kinetic Monte Carlo(KMC) methods. First, we performed the MD simulation of the displacement cascade on a defectcluster to study the interaction between the defect cluster and the displacement cascade. The MDsimulations provide a lot of information on the amount of the defect production and the subsequentmorphological change in the defect cluster. The results are used to make simple models that describethe nature of the displacement cascade overlap on the defect clusters. The models are thenimplemented into the KMC simulation code to extend the length- and time-scale of the simulation,which allows us to evaluate directly the defect cluster accumulations during a long-term irradiation.The irradiation growth strain resulting from the defect cluster accumulations is simply evaluated, andcompared to an available experimental data. The comparison suggests that the displacement cascadeoverlap plays an important role on the irradiation growth, and, consequently, the KMC method withthe simple models must be appropriate for the simulations of the irradiation growth
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.889.pdf
