Microstructural analysis of 400 grade maraging steel after thermomechanical treatment
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2000
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INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS
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Resumo
Maraging steels 400 were developed targeting to reach high levels of mechanical resistance
with a good toughness. Being maraging steels highly alloyed materials, they have the tendency to
segregate some elements in its as-cast condition. This micro segregation is reduced when the
material is homegeneized at high temperatures for long time. Elements that more segregate are Ti
and Mo. Microsegregation was investigated by means of scanning electron microscopy (SEM) with
microanalysis by EDS. On the other hand, by means of electrical resistivity it was observed that the
more dissolved are the alloying elements the higher is the electrical resistivity. In forging, the
resistivity tends to increase and an additional thermal treatment for 835°C strongly reduces the
electrical resistivity increasing simultaneously the microhardness. Through transmission electron
microscopy (TEM) an intense precipitation was observed. Subsequent thermal treatments to higher
temperatures, showed that the ideal solubilization of the maraging steel 400 occurs at 1050°C.
Como referenciar
PADIAL, A.G.F.; MONTEIRO, W.A.; PAES de ANDRADE, A.H.; RIGO, O.D. Microstructural analysis of 400 grade maraging steel after thermomechanical treatment. In: INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS, Dec. 4-8, 2000, Las Vegas, NV, USA. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/13387. Acesso em: 08 Oct 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.