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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

  • US 20160175929A1
  • Filed: 06/30/2014
  • Published: 06/23/2016
  • Est. Priority Date: 07/04/2013
  • Status: Active Grant
First Claim
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1. :

  • A method of fabricating a part out of a material with discontinuous reinforcement, the method comprising;

    melting or sintering powder particles via a high-energy beam,whereinthe material is a metallic, intermetallic, ceramic, ceramic matrix composite, or a metal matrix composite material,the powder particles have substantially identical mean composition, a sphericity of from 0.8 to 1.0, a form factor of from 1 to √

    2, and a grain size distribution narrowed around a mean diameter value d50% in such a manner that;


    (d90%

    d
    50%)/d50%

    0.66,
    (d50%

    d
    10%)/d50%

    0.33, and
    (d90%

    d
    10%)/d50%

    1.00,the composition of the powder particles comprises an additional chemical element in a quantity of more than 0 and less than 0.5 wt % and suitable for modifying the material'"'"'s microstructure,the powder particles provide the discontinuous reinforcement, andthe additional chemical element facilitates wetting of the reinforcement by a liquid, which is formed by melting a portion of the powder particles via the high-energy beam.

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