Use of selective laser fusion in Zircaloy and tungsten alloy for employ in end-caps for nuclear fuel element rods and shielding
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2022
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24.
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This study shows that it is possible to obtain parts of zirconium alloy called Zircaloy-4 (Zry-4)
through selective laser melting (SLM), using metal chips as raw material. Additive manufacturing
technology is emerging in Brazil, whose principle is the manufacture of a piece layer by layer from
a metallic powder. Zirconium alloys are widely used in nuclear reactors, mainly in fuel element
cladding and grids. The closing of the ends of the rods is done by end-caps, which is machined and
generates large amounts of chips, which are a valuable source for the reuse of zirconium, having
the advantage of being hafnium-free. After hydriding the Zircaloy it becomes zirconium hydride
(ZrH2) and can be ground, obtaining the alloy in powder form to be used in SLM. A tungsten alloy
with SLM technology was also studied due to its high melting temperature, high density and high
mechanical strength, which can be used in shielding against radiation. In this study, a thin layer of
alloys was cast on a substrate, which were evaluated for chemical composition, microstructure,
hardness and roughness, whose results indicated values compatible with the stipulated
requirements.
Como referenciar
PEREIRA, L.T.; ROSSI, J.L.; FASANO, A.C.; MUCSI, C.S.; BEHMER, W.; LUIZ, L.; FLORENTINO, E. Use of selective laser fusion in Zircaloy and tungsten alloy for employ in end-caps for nuclear fuel element rods and shielding. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24., 6-10 de novembro, 2022, Águas de Lindóia, SP. Resumo... Disponível em: http://repositorio.ipen.br/handle/123456789/33791. Acesso em: 25 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.