Grain boundary engineering for additive manufacturing
Abstract
In one embodiment, a method of manufacturing a metal part using a laser or electron beam during a powder bed additive manufacturing process includes melting each of a number of layers of metal powder of the metal part with an effective amount of energy using the laser or electron beam to form the metal part such that at least one or more portions of the metal part have a critical amount of residual strain. The method also includes performing a heat treatment on the metal part that transforms the residual strain into substantially distributed coincidence site lattice (CSL) grain boundaries, low angle grain boundaries, or both in the metal part.
- Inventors:
- Issue Date:
- Research Org.:
- General Electric Co., Niskayuna, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1650844
- Patent Number(s):
- 10639719
- Application Number:
- 15/279,182
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- DOE Contract Number:
- NE0008428
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 09/28/2016
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING
Citation Formats
Lou, Xiaoyuan, Dolley, Evan Jarrett, and Morra, Martin Matthew. Grain boundary engineering for additive manufacturing. United States: N. p., 2020.
Web.
Lou, Xiaoyuan, Dolley, Evan Jarrett, & Morra, Martin Matthew. Grain boundary engineering for additive manufacturing. United States.
Lou, Xiaoyuan, Dolley, Evan Jarrett, and Morra, Martin Matthew. Tue .
"Grain boundary engineering for additive manufacturing". United States. https://www.osti.gov/servlets/purl/1650844.
@article{osti_1650844,
title = {Grain boundary engineering for additive manufacturing},
author = {Lou, Xiaoyuan and Dolley, Evan Jarrett and Morra, Martin Matthew},
abstractNote = {In one embodiment, a method of manufacturing a metal part using a laser or electron beam during a powder bed additive manufacturing process includes melting each of a number of layers of metal powder of the metal part with an effective amount of energy using the laser or electron beam to form the metal part such that at least one or more portions of the metal part have a critical amount of residual strain. The method also includes performing a heat treatment on the metal part that transforms the residual strain into substantially distributed coincidence site lattice (CSL) grain boundaries, low angle grain boundaries, or both in the metal part.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}
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