2015
DOI: 10.1590/s1517-707620150001.0008
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Influência das Variáveis Térmicas Sobre os Espaçamentos Dendríticos Terciários durante a Solidificação Direcional Horizontal da Liga Al-6%Cu

Abstract: A liga Al-6%Cu foi solidificada direcionalmente sob condições transitórias de extração de calor e microestruturas dendríticas, variáveis térmicas de solidificação, ou seja, velocidade de deslocamento da isoterma líquidus (VL), taxa de resfriamento (TR) e gradiente de temperatura à frente da isoterma liquidus (GL) foram caracterizadas, determinadas experimentalmente e correlacionadas com os espaçamentos dentríticos terciários (λ3). Para tanto, foi projetado, construído e aferido um dispositivo de solidificação … Show more

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Cited by 4 publications
(1 citation statement)
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“…The authors have observed that a -1/3 power law may be applied to represent k 2 variation with C R for both growth directions. Additionally, Dias Filho et al [28] have shown that the k 3 evolution of the same Al-Cu alloy during unsteady-state horizontal solidification may also be related to G R and C R by -1.1 and -0.55 power laws, respectively. In the study by Vasconcelos et al [29], the microhardness (HV) dependence on microstructural features of a horizontally solidified Al-6 wt%Cu alloy has been evaluated using power and Hall-Petch-type experimental equation.…”
Section: Introductionmentioning
confidence: 99%
“…The authors have observed that a -1/3 power law may be applied to represent k 2 variation with C R for both growth directions. Additionally, Dias Filho et al [28] have shown that the k 3 evolution of the same Al-Cu alloy during unsteady-state horizontal solidification may also be related to G R and C R by -1.1 and -0.55 power laws, respectively. In the study by Vasconcelos et al [29], the microhardness (HV) dependence on microstructural features of a horizontally solidified Al-6 wt%Cu alloy has been evaluated using power and Hall-Petch-type experimental equation.…”
Section: Introductionmentioning
confidence: 99%