Processing of zirconium sponge and zirconium alloys in an electric arc furnace
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2022
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIÊNCIA DOS MATERIAIS, 24.
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Zirconium and its alloys, as well as titanium and its alloys, are mostly used in the nuclear and
aeronautical industries, respectively. A nuclear-grade zirconium sponge is the main component for
obtaining nuclear fuel element cladding for nuclear power plants and other components, such as
grids and springs. The zirconium sponge is also an important raw material in obtaining various
alloys for nuclear fuels from small and medium power reactors, such as U-Zr-Nb. Thus, this project
has relevance, since the clean melting of zirconium sponge will provide part of the domain of
nuclear fuel technology. In this work, high entropy alloys (Ti-Zr-Nb-Ta-Fe-Cr) were produced in
order to evaluate the evolution of the microstructure and modulus of elasticity as a function of
temperature and heat treatment. A high entropy alloy with a composition different from those
found in the literature is proposed. The materials were separated and melted in an electric arc
furnace under a non-consumable electrode vacuum. These alloys were consolidated in the form of
bars 220 mm long and thicknesses ranging from 8 to 12 mm. After melting, annealing was carried
out at 1100 °C for 24 hours to homogenize the material obtained. The initial microstructural
analyzes showed two very distinct phases with defined grain boundaries, the chemical etching to
reveal the microstructure was a solution of 100 ml deionized H2O + 10 ml HNO3 + 2 ml HF. The
samples are being quenched in oil and X-ray diffraction tests will be carried out in a hot chamber
and the results will be presented at this congress.
Como referenciar
REIS, L.A.; MORAIS, N.W.; BETINI, E.G.; PEREIRA, L.T.; POLITANO, R.; BARBOSA, L.P.; MARTINEZ, L.G.; MUCSI, C.S.; ROSSI, J.L. Processing of zirconium sponge and zirconium alloys in an electric arc furnace. 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/123456789/33790. Acesso em: 11 May 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.