Safran Aircraft Engines

Airbus Helicopters

Mbda France

European Aeronautic Defence and Space Company Eads France

Laëtitia Kirschner

Christophe Colin

Jean-Baptiste Mottin

Gérard Saussereau

A method for fabricating a part by selective melting or sintering of powder beds by high energy beam, the method including a) providing a material in the form of powder particles; b) depositing a first powder layer on a support; c) scanning a region of the first layer with the beam to heat the powder locally to a temperature higher than the powder sintering temperature, such that the powder particles as melted or sintered form a first single-piece element; d) depositing a second powder layer on the first powder layer; e) scanning a region of the second layer with the beam to heat the powder to a temperature higher than the powder sintering temperature, so that the particles of powder as sintered or melted form a second single-piece element; and f) repeating d) and e) for each new powder layer laid over a preceding layer until the part is formed.

Method for the additive manufacturing of a part by selective melting or selective sintering of optimized-compactness powder beds using a high energy beam

A method of fabricating parts out of metallic, intermetallic, ceramic, ceramic matrix composite, or metal matrix composite material with discontinuous reinforcement, includes melting or sintering powder particles by means of a high-energy beam. The powder used is a single powder of particles that present sphericity lying in the range 0.8 to 1.0 and of form factor lying in the range 1 to &#x221a;2, each powder particle presenting substantially identical mean composition, and the grain size distribution of the particles of the powder is narrowed around the mean diameter value d50% in such a manner that: (d90%&#x2212;d50%)/d50%&#x2264;0.66; and (d50%&#x2212;d10%)/d50%&#x2264;0.33; with a 'span': (d90%&#x2212;d10%)/d50%&#x2264;1.00.

Process for additive manufacturing of parts by melting or sintering particles of powder(s) using a high-energy beam with powders adapted to the targeted process/material pair

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Paris, France

Laëtitia Kirschner