Arbuz Alexandr, Popov Fedor, Panichkin Alexandr, Kawałek Anna, Lutchenko Nikita, Ozhmegov Kirill
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.
Materials (Basel). 2024 Oct 18;17(20):5078. doi: 10.3390/ma17205078.
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.
在开发核工业材料时，提高合金成分和加工方法都至关重要。本研究重点在于对将径向剪切轧制（RSR）应用于Zr-1%Nb合金铸锭的研究，旨在细化其微观结构并改善其核应用性能。这种方法在铸造工件内部具有复杂的涡旋金属流动，此前尚未针对锆铸锭加工进行过测试，因此对其适用性的实验验证具有科学意义。通过真空感应熔炼生产的直径30毫米的铸锭，最初在800°C下轧制至20毫米以消除缺陷并细化铸造组织。第二个轧制阶段在530°C下将直径减小至13毫米，形成了超细晶粒结构。RSR方法在较少的循环次数内有效地结合了组织细化和缺陷修复，使其适用于生产核反应堆部件。这种方法显示出传统加工步骤的潜在减少，为制备核应用的高质量材料提供了更有效的途径。
