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11.发明申请公开(公告)号：US20190275613A1
公开(公告)日：2019-09-12
申请号：US15915406
申请日：2018-03-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Thomas Etter , Matthias Hoebel , Felix Martin Gerhard Roerig
IPC: B23K26/342 , B23K26/082 , B23K26/06 , B23K26/0622 , B23K26/03 , B23K26/10
Abstract: Controlling microstructure in an object created by metal powder additive manufacturing is disclosed. During additive manufacturing of one or more objects using an irradiation beam source system, for each respective layer in a selected range of layers including a cross-sectional area of the one or more objects including the selected object, a duration controller controls actuation of each irradiation device to maintain constant a sum of: an irradiation device melting time, an irradiation device idle time, and a recoating time expended applying a new powder material layer, while otherwise maintaining all other operation parameters of each irradiation device constant.
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12.发明授权公开(公告)号：US09889539B1
公开(公告)日：2018-02-13
申请号：US15680488
申请日：2017-08-18
Applicant: General Electric Company
Abstract: Methods include converting a residual surface stress in a component made by a metal powder additive manufacturing process. The component includes a body having an external surface and an internal opening passing at least partially through the body, the internal opening including an unused metal powder from the additive manufacturing process therein. Residual surface stress is converted in at least a portion of a body about the internal opening by applying a pressure in the internal opening using a non-compressible fluid and the unused metal powder. The method is advantageous for use with gamma primed hardened superalloys. An additively manufactured component including the stress-converted internal opening is also disclosed.
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