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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United States of America Patent
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Jul 14, 2020
Grant Date -
Jun 23, 2016
app pub date -
Jun 30, 2014
filing date -
Jul 4, 2013
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Abstract
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 √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%−d50%)/d50%≤0.66; and (d50%−d10%)/d50%≤0.33; with a “span”: (d90%−d10%)/d50%≤1.00.
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