Hybrid Metal Additive Manufacturing

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

Deadline for manuscript submissions: 25 May 2024 | Viewed by 1564

Special Issue Editors


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Guest Editor
IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Interests: hybrid manufacturing; metal forming; joining processes; additive manufacturing; experimentation; numerical simulation

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Guest Editor
1. CIMOSM, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, R. Conselheiro Emídio Navarro 1, 1959-007 Lisboa, Portugal
2. IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Interests: hybrid manufacturing; metal forming; joining by forming, additive manufacturing, non-conventional machining; experimentation
Special Issues, Collections and Topics in MDPI journals

E-Mail Website1 Website2
Guest Editor
IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
Interests: metal forming; welding; joining by forming; additive; manufacturing; hybrid additive manufacturing; finite element modelling

Special Issue Information

Dear Colleagues,

Hybrid manufacturing (HM) involves combinations of different technologies to overcome their individual limitations and benefit from their synergistic advantages. In the case of hybrid additive manufacturing (HAM), the aim is to overcome the inherent drawbacks of additive manufacturing (AM) related to low productivity, metallurgical defects, rough surface quality, and the lack of dimensional accuracy through integration with conventional manufacturing technologies. HAM can also be seen as a strategy for fostering flexibility and reducing material waste.

Under these circumstances, the aim and objectives of this Special Issue are focused on recent advances in hybrid metal additive manufacturing (HMAM), covering new processing routes, materials, equipment, and applications. Experimental and numerical investigations covering fundamental topics of HMAM are also welcome.

Dr. Carlos Alves da Silva
Dr. Ivo Manuel Ferreira de Bragança
Dr. João Pedro da Fonseca Matos Pragana
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hybrid metal additive manufacturing
  • processes
  • materials
  • equipment
  • applications
  • experimentation
  • numerical simulation

Published Papers (1 paper)

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Research

18 pages, 9553 KiB  
Article
Maximising the Deposition Rate of 5356 Aluminium Alloy by CMT-Twin-Based WAAM While Reducing Segregation-Related Problems by Local IR Thermography
by Lexuri Vazquez, Amaia Iturrioz, Pablo Lopez de Uralde and Pedro Alvarez
Metals 2023, 13(11), 1890; https://doi.org/10.3390/met13111890 - 14 Nov 2023
Cited by 1 | Viewed by 1097
Abstract
The CMT-Twin-based wire and arc additive manufacturing (WAAM) process for 5356 aluminium alloy has been investigated focusing on the optimisation of welding parameters to maximise the deposition rate while avoiding segregation-related problems during solidification. For that, different conditions have been studied regarding interpass [...] Read more.
The CMT-Twin-based wire and arc additive manufacturing (WAAM) process for 5356 aluminium alloy has been investigated focusing on the optimisation of welding parameters to maximise the deposition rate while avoiding segregation-related problems during solidification. For that, different conditions have been studied regarding interpass dwell time and the use of forced cooling. The larger heat input produced by the double-wire CMT-Twin process, compared to the single-wire CMT, creates vast segregations for less intensive cooling conditions and short dwell times that can induce cracks and reduce ductility. Thermography has been applied to set a maximum local temperature between consecutive layers avoiding those segregations and pores, and to optimise the total manufacturing time by varying the interpass dwell time along the height of the wall. Only a constant interpass long dwell time of 240 s and the new optimised strategy were effective in avoiding merged segregations, reducing the latest total manufacturing time by 36%. Obtained tensile properties are comparable to other works using WAAM for this alloy, showing lower properties in the vertical orientation. The use of CMT-Twin-based welding technology together with variable interpass dwell time controlled by thermography is an interesting alternative to build up parts with wall thicknesses around of 10 mm in a reduced time. Full article
(This article belongs to the Special Issue Hybrid Metal Additive Manufacturing)
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