Formation of Stacking Fault Pyramid in Zirconium

نویسندگان

چکیده

Zirconium alloys were widely used as fuel cladding in nuclear reactors. Stacking fault pyramid (SFP) is an irradiation-induced defect zirconium. In this work, the formation process of SFP from a hexagonal vacancy plate on basal plane studied by molecular dynamics (MD) simulations. The results show that, during plate, dislocation firstly dissociated into two partial dislocations src="http://www.techscience.com/files/icces/image/2.png" width="60px"> and src="http://www.techscience.com/files/icces/image/3.png" width="60px">. former one resides plane, while latter glides first-order pyramidal plane. partials adjacent planes react further form edge, i.e. src="http://www.techscience.com/files/icces/image/4.png" width="150px">. A critical edge length initial observed, below which perfect formed above truncated formed. increases with increasing temperature. Under compressive stress, collapses /2 loop then becomes faulted loop. shear facilitated, stress. current work useful for understanding irradiation effects zirconium alloys.

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ژورنال

عنوان ژورنال: International Conference on Computational & Experimental Engineering and Sciences online version

سال: 2023

ISSN: ['1933-2815']

DOI: https://doi.org/10.32604/icces.2023.09982