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Proceedings Paper

Femtosecond fiber laser additive manufacturing and welding for 3D manufacturing
Author(s): Huan Huang; Bai Nie; Peng Wan; Lih-Mei Yang; Shuang Bai; Jian Liu
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Paper Abstract

Due to the unique ultra-short pulse duration and high peak power, femtosecond (fs) laser has emerged as a powerful tool for many applications but has rarely been studied for 3D printing. In this paper, welding of both bulk and powder materials is demonstrated for the first time by using high energy and high repetition rate fs fiber lasers. It opens up new scenarios and opportunities for 3D printing with the following advantages - greater range of materials especially with high melting temperature, greater-than-ever level of precision (sub-micron) and less heat-affected-zone (HAZ). Mechanical properties (strength and hardness) and micro-structures (grain size) of the fabricated parts are investigated. For dissimilar materials bulk welding, good welding quality with over 210 MPa tensile strength is obtained. Also full melting of the micron-sized refractory powders with high melting temperature (above 3000 degree C) is achieved for the first time. 3D parts with shapes like ring and cube are fabricated. Not only does this study explore the feasibility of melting dissimilar and high melting temperature materials using fs lasers, but it also lays out a solid foundation for 3D printing of complex structure with designed compositions, microstructures and properties. This can greatly benefit the applications in automobile, aerospace and biomedical industries, by producing parts like nozzles, engines and miniaturized biomedical devices.

Paper Details

Date Published: 16 March 2015
PDF: 12 pages
Proc. SPIE 9353, Laser 3D Manufacturing II, 93530A (16 March 2015); doi: 10.1117/12.2082846
Show Author Affiliations
Huan Huang, PolarOnyx, Inc. (United States)
Bai Nie, PolarOnyx, Inc. (United States)
Peng Wan, PolarOnyx, Inc. (United States)
Lih-Mei Yang, PolarOnyx Laser, Inc. (United States)
Shuang Bai, PolarOnyx, Inc. (United States)
Jian Liu, PolarOnyx Inc. (United States)

Published in SPIE Proceedings Vol. 9353:
Laser 3D Manufacturing II
Henry Helvajian; Alberto Piqué; Martin Wegener; Bo Gu, Editor(s)

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