1995
DOI: 10.1007/bf02660979
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Heat transfer and microstructure during the early stages of metal solidification

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Cited by 118 publications
(91 citation statements)
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References 23 publications
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“…The rough surface texture consisted of higher peaks and deeper valleys and the surface tension of the droplet may have prevented a proper contact inside the valleys. The reduction in the interfacial contact surface area with rough surfaces has been reported to be the cause of the lower heat flows in other studies [46,47]. In terms of spreading, the reduction in contact surface area combined with gas trapped in the valleys and the greater waviness spacing may also have allowed the droplet to spread as well as on the smooth surface.…”
Section: Effect Of Surface Roughnessmentioning
confidence: 84%
“…The rough surface texture consisted of higher peaks and deeper valleys and the surface tension of the droplet may have prevented a proper contact inside the valleys. The reduction in the interfacial contact surface area with rough surfaces has been reported to be the cause of the lower heat flows in other studies [46,47]. In terms of spreading, the reduction in contact surface area combined with gas trapped in the valleys and the greater waviness spacing may also have allowed the droplet to spread as well as on the smooth surface.…”
Section: Effect Of Surface Roughnessmentioning
confidence: 84%
“…Quelques études ont été effectuées sur les effets associés à la topographie de surface du moule [16][17][18][19][20][21][22]. Les effets ont été perçus au niveau de la germination, du transfert de chaleur et de la microstructure.…”
Section: Chapitre 4 éTudes Antérieures Sur Les Effets De Surface Des unclassified
“…La mesure d'effets microscopiques étant difficile en raison de la taille, plusieurs auteurs [15,[17][18][19][20][21] ont étudié les effets de la rugosité de surface du moule sur une échelle macroscopique. Cependant, l'incapacité de mesurer une différence d'extraction de chaleur dans ce cas pourrait être attribuable à la faible variation des rugosités de surface utilisées (R a 0.02 -0.47|xm).…”
Section: Effets Macroscopiquesunclassified
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“…Finally, the last parameter in the dominator of this part is chill roughness "". The laboratory scale experiments by Muojekwu et al [22] are evident that heat extraction increases with increasing surface smoothness of chill, resulting in an increase in shell thickness and a decrease in secondary dendrite arm spacing. This means that the increasing in the chill roughness decreases the resistance of thermo-mechanical stresses and therefore is inversely proportion to MTMR as illustrated in Equation (1).…”
Section: Introductionmentioning
confidence: 98%