Skip to main content
Article
Aluminum Parts Fabricated by Laser-Foil-Printing Additive Manufacturing: Processing, Microstructure, and Mechanical Properties
Materials
  • Chia Hung Hung
  • Yingqi Li
  • Austin Sutton
  • Wei Ting Chen
  • Xiangtao Gong
  • Heng Pan, Missouri University of Science and Technology
  • Hai Lung Tsai
  • Ming-Chuan Leu, Missouri University of Science and Technology
Abstract

Fabrication of dense aluminum (Al-1100) parts (>99.3% of relative density) by our recently developed laser-foil-printing (LFP) additive manufacturing method was investigated as described in this paper. This was achieved by using a laser energy density of 7.0 MW/cm2 to stabilize the melt pool formation and create sufficient penetration depth with 300 μm thickness foil. The highest yield strength (YS) and ultimate tensile strength (UTS) in the LFP-fabricated samples reached 111 ± 8 MPa and 128 ± 3 MPa, respectively, along the laser scanning direction. These samples exhibited greater tensile strength but less ductility compared to annealed Al-1100 samples. Fractographic analysis showed elongated gas pores in the tensile test samples. Strong crystallographic texturing along the solidification direction and dense subgrain boundaries in the LFP-fabricated samples were observed by using the electron backscattered diffraction (EBSD) technique.

Department(s)
Mechanical and Aerospace Engineering
Research Center/Lab(s)
Center for High Performance Computing Research
Comments

U.S. Department of Energy, Grant DE-FE0012272

Keywords and Phrases
  • Additive manufacturing,
  • Aluminum alloys,
  • Laser-foil-printing
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2020 The Authors, All rights reserved.
Publication Date
1-16-2020
Publication Date
16 Jan 2020
Citation Information
Chia Hung Hung, Yingqi Li, Austin Sutton, Wei Ting Chen, et al.. "Aluminum Parts Fabricated by Laser-Foil-Printing Additive Manufacturing: Processing, Microstructure, and Mechanical Properties" Materials Vol. 13 Iss. 2 (2020) ISSN: 1996-1944
Available at: http://works.bepress.com/hai-lung-tsai/22/