Étude expérimentale et numérique de la coulée basse-pression de l'alliage de magnésium RZ5 dans des moules en sable imprimés en 3D

Abstract : The use of magnesium alloys has a considerable interest to reduce the mass of components in the aeronautics industry. The main drawback of magnesium alloys is their high oxidization leading to hazardous casting conditions. Nowadays, a renewed interest for magnesium alloys is related to the association of casting simulation software with Low-Pressure Casting (LPC) and sand printing. It should improve process robustness and limit the part design iterations. Nevertheless, these recent process lack of data on melt refining and the castability of magnesium alloy as RZ5 in LPC.This work proposes an experimental analysis of the actual Mg-Zr refining rules to define in what extent they are suitable in LPC process. Experimental castability tests at the industrial scale are then developed and they are compared with fluid flow simulations. They permit to establish analytical models of oxide inclusions and misrun predictions to define a process map limiting these defects. A specific LPC part design methodology is proposed and is applied on an industrial part.
Complete list of metadatas

Cited literature [152 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/tel-01763453
Contributor : Abes Star <>
Submitted on : Wednesday, April 11, 2018 - 10:31:08 AM
Last modification on : Tuesday, May 14, 2019 - 4:05:45 PM

File

SANITAS.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01763453, version 1

Collections

Citation

Antonin Sanitas. Étude expérimentale et numérique de la coulée basse-pression de l'alliage de magnésium RZ5 dans des moules en sable imprimés en 3D. Génie mécanique [physics.class-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2017. Français. ⟨NNT : 2017ENAM0040⟩. ⟨tel-01763453⟩

Share

Metrics

Record views

514

Files downloads

313