Process–Structure–Mechanical Properties of Metal Additive Manufacturing

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Additive Manufacturing".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 3031

Special Issue Editors


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Guest Editor
Additive Manufacturing Center for Mass Customized Production, National Taipei University of Technology, Taipei 10608, Taiwan
Interests: additive manufacturing; 3D printing; metal forming; implant design

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Guest Editor
Department of Mechanical and Manufacturing Engineering and Technology, Oregon Institute of Technology, Klamath Falls, OR 97601, USA
Interests: selective laser melting; additive manufacturing

Special Issue Information

Dear Colleagues,

Metal additive manufacturing (AM) has been used in many industries—aerospace, automotive, consumer products, industrial products, medical devices, and architecture. Lattice structure design, powder composition, processing parameter, and post-treatment influence the mechanical properties and accuracy of printed objects. Hybrid manufacturing is a combination method to improve accuracy and increase flexible manufacturing. Functionally graded material also opens a new application field that can be more focused on the effects of process, structure, and mechanical property.

This Special Issue of Metals focuses on metal additive manufacturing with respect to the topics mentioned below (please see the Keywords/Topics below). The papers presented in this Special Issue give an account of the 2020 scientific, technological, and industrial state of the art for metal additive manufacturing from different perspectives (see the Keywords/Topics below). Your contribution to this 2020 account is highly valuable and appreciated.

Prof. Dr. Cho-Pei Jiang
Prof. Dr. Timotius Pasang
Guest Editors

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Keywords

  • lattice structure
  • new application (including innovative design, topology optimization, lattice and surface optimization, etc.)
  • industrial applications (aerospace, defense, automotive, consumer, medical, and industrial products, etc.)
  • medical applications (customized design implant, orthopedic implant, dental implant, etc.)
  • processing parameter optimization (Taguchi method, experimental uniform design, etc.)
  • new materials (matrix material, novel material, smart materials, etc.)
  • hybrid manufacturing
  • post-processing
  • mechanical properties
  • processing parameter
  • hybrid manufacturing
  • mold design
  • implant

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Published Papers (1 paper)

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Research

15 pages, 3390 KiB  
Article
Effect of Heat Treatment on Ductility and Precipitation Size of Additively Manufactured AlSi10Mg
by Sandra Megahed, Jannik Bühring, Tobias Duffe, Aleksandar Bach, Kai-Uwe Schröder and Johannes Henrich Schleifenbaum
Metals 2022, 12(8), 1311; https://doi.org/10.3390/met12081311 - 4 Aug 2022
Cited by 9 | Viewed by 2398
Abstract
Laser powder bed fusion (LPBF) is a promising technology to manufacture complex components. Aluminium (Al) alloys are extensively implemented in automotive and aerospace applications for their exceptional strength and stiffness to weight ratios. AlSi10Mg is a precipitation strengthened alloy. Due to the high [...] Read more.
Laser powder bed fusion (LPBF) is a promising technology to manufacture complex components. Aluminium (Al) alloys are extensively implemented in automotive and aerospace applications for their exceptional strength and stiffness to weight ratios. AlSi10Mg is a precipitation strengthened alloy. Due to the high cooling rate during the LPBF process, a fine microstructure in as-built samples is expected, increasing strength and hardness values. However, the ductility of as-built AlSi10Mg alloys is limited. Heat treatment allows control of microstructure influencing the mechanical properties and ductility. In this study, AlSi10Mg samples with a relative density >99.5% were manufactured with LPBF. Surface roughness values of 10.86 µm were achieved. Tensile and three-point bending samples were printed for analysis. Since load conditions of lattice structures in compression are much more complex compared to that of volume samples, increasing tensile ductility is not sufficient to determine the suitability of lattice structures for applications where high deformations are required. Therefore, lattice structures for compression testing were manufactured and individually heat treated to achieve a ductility of at least 20%. The precipitation size was found to increase depending on heat treatment from 0.44 µm up to 2.25 µm, giving insight on deformation behavior. Full article
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