Using the Radial-Shear Rolling Method for Casted Zirconium Alloy Ingot Structure Improvement
Arbuz A. Popov F. Panichkin A. Kawałek A. Lutchenko N. Ozhmegov K.
October 2024Multidisciplinary Digital Publishing Institute (MDPI)
Materials
2024#17Issue 20
In developing materials for the nuclear industry, it is crucial to enhance both alloy composition and processing methods. This study focuses on investigations of applying radial-shear rolling (RSR) to a Zr-1%Nb alloy ingot, aiming to refine its microstructure and improve its properties for nuclear applications. This method, with complex vortex metal flow inside of a casted workpiece, has not been previously tested for processing zirconium ingots, so experimental verification of its applicability is of scientific interest. The 30 mm diameter ingot, produced by vacuum induction melting, was initially rolled to 20 mm at 800 °C to eliminate defects and refine the cast structure. A second rolling stage reduced the diameter to 13 mm at 530 °C, resulting in an ultrafine-grained structure. The RSR method effectively combines structural refinement and defect healing within fewer cycles, making it suitable for producing components for nuclear reactors. This approach demonstrates a potential reduction in traditional processing steps, providing a more efficient route for preparing high-quality materials for nuclear applications.
cast structure , grain refinement , ingot , microstructure , plastic deformation , radial-shear rolling
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Core Facilities—Office the Provost, AEO Nazarbayev University, 53 Kabanbay Batyr Ave, Astana, 010000, Kazakhstan
Institute of Metallurgy and Ore Benefication JSC, Satbayev University, 29/133 Shevchenko St., Almaty, 050010, Kazakhstan
Department of Production Management, Faculty of Engineering Production and Materials Technology, Częstochowa University of Technology, ul. J.H. Dąbrowskiego 69, Częstochowa, 42-201, Poland
Core Facilities—Office the Provost
Institute of Metallurgy and Ore Benefication JSC
Department of Production Management
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