System and method for grain refinement and general control of grain morphology in laser additive manufacturing
Abstract
The present disclosure relates to a system for forming a material layer that may make use of an optical light source for generating an optical beam, and a beam shaping subsystem configured to shape the optical beam to generate a complex beam intensity profile. The complex shaped beam may be used to selectively melt at least portions of a bed of powder particles residing on a substrate during formation of the material layer, as the optical light source is moved. A computer may be used to control the optical light source. The complex beam intensity profile enables control over the microstructure of grains formed during melting of the powder particles as the material layer is formed.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1805373
- Patent Number(s):
- 10888956
- Application Number:
- 16/010,111
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/15/2018
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Roehling, Tien, Guss, Gabe, Khairallah, Saad A., Matthews, Manyalibo Joseph, and Wu, Sheldon S. System and method for grain refinement and general control of grain morphology in laser additive manufacturing. United States: N. p., 2021.
Web.
Roehling, Tien, Guss, Gabe, Khairallah, Saad A., Matthews, Manyalibo Joseph, & Wu, Sheldon S. System and method for grain refinement and general control of grain morphology in laser additive manufacturing. United States.
Roehling, Tien, Guss, Gabe, Khairallah, Saad A., Matthews, Manyalibo Joseph, and Wu, Sheldon S. Tue .
"System and method for grain refinement and general control of grain morphology in laser additive manufacturing". United States. https://www.osti.gov/servlets/purl/1805373.
@article{osti_1805373,
title = {System and method for grain refinement and general control of grain morphology in laser additive manufacturing},
author = {Roehling, Tien and Guss, Gabe and Khairallah, Saad A. and Matthews, Manyalibo Joseph and Wu, Sheldon S.},
abstractNote = {The present disclosure relates to a system for forming a material layer that may make use of an optical light source for generating an optical beam, and a beam shaping subsystem configured to shape the optical beam to generate a complex beam intensity profile. The complex shaped beam may be used to selectively melt at least portions of a bed of powder particles residing on a substrate during formation of the material layer, as the optical light source is moved. A computer may be used to control the optical light source. The complex beam intensity profile enables control over the microstructure of grains formed during melting of the powder particles as the material layer is formed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {1}
}
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