Patent ID: 11878338
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 8:
9. A process for manufacturing a single-crystal component by epitaxial growth, the process comprising:
manufacturing a mould comprising a cavity in which the component is to be formed, and a housing having an entire elliptical cross-section in which a single-crystal seed is disposed, the single-crystal seed having an elliptical cross-section defined by a minor axis and by a major axis, the minor axis and the major axis of the elliptical cross-section of the single-crystal seed being oriented as a function of secondary crystallographic orientations of the single-crystal forming the single-crystal seed, wherein the elliptical cross-section of the single-crystal seed has an eccentricity greater than or equal to 0.5 and less than 1, 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 a same vertical axis,
casting the molten metal into the mould, and
directional solidification of the cast metal so as to obtain the component.