Abstract: A mould for use in manufacturing a single-crystal component by metal casting and epitaxial growth, includes a cavity in which the component is to be formed and a housing having an elliptical cross-section in which a single-crystal seed is disposed, the seed having an elliptical cross-section defined by a minor axis and by a major axis, the housing being in fluid communication with the cavity via an opening of circular cross-section through which molten metal is to flow, the single-crystal seed and the opening being centred on the same vertical axis, in which the minor axis and the major axis of the cross-section of the seed are oriented as a function of the secondary crystallographic orientations of the single-crystal forming the single-crystal seed.

Abstract: A method for manufacturing a metal workpiece by casting a metal alloy in a mould, in which prior to the casting, a chart is determined providing a risk of appearance of recrystallised grains during the casting and/or solidification of the metal workpiece, depending on temperature and plastic deformation energy conditions undergone by the metal workpiece, the casting of the metal alloy in the mould being implemented under casting and solidification conditions determined using the chart in order for the temperature and plastic deformation energy conditions undergone by the metal workpiece to be less than a given threshold for the risk of appearance of recrystallised grains.

Abstract: A foundry mold includes at least one molding cavity and one pair of feeder arms. The molding cavity extends, along a horizontal axis, from a first end to a second end, and the first pair of feeder arms comprises a first feeder arm, oriented in a substantially vertical direction and connected to the first end of the first molding cavity, and a second feeder arm, substantially parallel to the first feeder arm and connected to the second end of the first molding cavity.

Abstract: A foundry mold includes at least one molding cavity and one pair of feeder arms. The molding cavity extends, along a horizontal axis, from a first end to a second end, and the first pair of feeder arms comprises a first feeder arm, oriented in a substantially vertical direction and connected to the first end of the first molding cavity, and a second feeder arm, substantially parallel to the first feeder arm and connected to the second end of the first molding cavity.

Abstract: The present invention concerns a method for manufacturing a metal workpiece by casting a metal alloy in a mould, wherein prior to the casting, a chart is determined providing a risk of appearance of recrystallised grains during the casting/solidification of the metal workpiece, depending on temperature and plastic deformation energy conditions undergone by said metal workpiece, the casting of the metal alloy in the mould being implemented under casting and solidification conditions determined using the chart in order for the temperature and plastic deformation energy conditions undergone by the metal workpiece to be less than a given threshold for the risk of appearance of recrystallised grains.

Abstract: A mould for use in manufacturing a single-crystal component by metal casting and epitaxial growth, includes a cavity in which the component is to be formed and a housing having an elliptical cross-section in which a single-crystal seed is disposed, the seed having an elliptical cross-section defined by a minor axis and by a major axis, the housing being in fluid communication with the cavity via an opening of circular cross-section through which molten metal is to flow, the single-crystal seed and the opening being centred on the same vertical axis, in which the minor axis and the major axis of the cross-section of the seed are oriented as a function of the secondary crystallographic orientations of the single-crystal forming the single-crystal seed.

Abstract: A shell mold for a guide vane sector includes a first platform and a second platform that are mutually coaxial and between which there extends at least one airfoil. The shell mold has a first platform molding portion suitable for forming the first platform, a second platform molding portion suitable for forming the second platform, an airfoil molding portion suitable for forming the airfoil, a fastener molding portion suitable for forming a fastener projecting from the first platform towards a first edge of the first platform, a main casting duct, a distribution duct connecting the main casting duct to the fastener molding portion, and an auxiliary duct connecting the main casting duct to the first platform molding portion beside said first edge.

Abstract: A shell mold (100) for a guide vane sector comprising a first platform and a second platform that are mutually coaxial and between which there extends at least one airfoil, the shell mold having a first platform molding portion (112) suitable for forming the first platform, a second platform molding portion (114) suitable for forming the second platform, an airfoil molding portion (116) suitable for forming the airfoil, a fastener molding portion (118) suitable for forming a fastener projecting from the first platform towards a first edge of the first platform, a main casting duct (120), a distribution duct (122) connecting the main casting duct (120) to the fastener molding portion (118), and an auxiliary duct (124) connecting the main casting duct (120) to the first platform molding portion (112) beside said edge.