Laser metal deposition of high gamma prime superalloys with cooling effect

A super alloy, laser technology, applied in the field of materials, can solve problems such as easy thermal cracking

Pending Publication Date: 2020-05-29
SIEMENS ENERGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, these alloys are very prone to thermal cracking during e.g. laser metal deposition (LMD) processes and subsequent heat treatments

Method used

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  • Laser metal deposition of high gamma prime superalloys with cooling effect
  • Laser metal deposition of high gamma prime superalloys with cooling effect

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Embodiment Construction

[0010] The components and materials described below as making up the various embodiments are intended to be illustrative and not restrictive. Many suitable components and materials which will perform the same or a similar function as the materials described herein are intended to be within the scope of embodiments of the invention.

[0011] The present inventors have developed a novel additive manufacturing (AM) and / or repair method involving a variation of the laser metal deposition (LMD) process in which a cooling system (e.g., a deep cooling system) is combined with the LMD system to Cool superalloy base materials / substrates / components (eg, gas turbine blades, vanes, blade surfaces, etc.) and reduce or completely eliminate hot cracking that occurs during the welding process or subsequent heat treatment.

[0012] Referring now to the drawings, wherein the drawings are for purposes of illustrating embodiments of the subject matter herein only and not limiting, figure 1 A sys...

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Abstract

Systems (100) and methods (1000) for additively manufacturing or repairing a component from a base material (10). The system may include a laser metal deposition (LMD) system (200) operably connectedto a means for cooling (300) the base material during laser processing of additive materials deposited 5 in a melt pool on the base material. The LMD system includes a laser energy source (202) configured to direct laser energy towards the base material to form the melt pool thereon and to processes the deposited additive materials to form layers on the base material upon solidification. The meansfor cooling may be configured to cool the base material to within a cooling temperature range during the LMD 10 process, which results in, e.g., a cooling / freezing effect. This cooling effect shortens the solidification period during laser processing and allows for weld heat to be released from the base material.

Description

technical field [0001] The present disclosure relates generally to the field of materials technology, and more particularly to additive manufacturing and repair methods using laser metal deposition of high gamma prime superalloys with cooling effects. Background technique [0002] Welding of superalloys presents several technical challenges due to the high strength (and corresponding low ductility) that these alloys are optimized to achieve. Heat sources such as lasers and electric arcs are being applied to build additively manufactured (AM) parts or repair damaged superalloy components. Unfortunately, these alloys are very prone to thermal cracking during, for example, laser metal deposition (LMD) processes and subsequent heat treatments. Hot cracking during welding at room temperature usually occurs at the solid-liquid interface in the molten pool, which structurally compromises the integrity of the AM or repaired part. Accordingly, there remains a need for an LMD system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/342
CPCB23P6/007F01D5/005B33Y80/00B33Y10/00B33Y30/00B33Y40/00B23K26/342B23K26/703B23K2101/001B23K2103/26B33Y40/10Y02P10/25B23K26/144B33Y70/00B23K26/0006
Inventor B.布尔鲍姆A.卡梅尔D.朱伊尼
Owner SIEMENS ENERGY INC
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