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Special Issue "Advanced Manufacturing and Joining Technologies of Aluminum and Steel Sheets"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (15 November 2021) | Viewed by 3155

Special Issue Editor

Dr. Pasquale Russo Spena
E-Mail Website
Guest Editor
Department of Management and Production Engineering, Politecnico di Torino, Torino, Italy
Interests: advanced manufacturing processes; sheet forming; welding; mechanical joining; numerical modeling; process monitoring; aluminum and steel sheet; materials characterization; heat and surface treatments
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The tendency toward design-innovative sheet components and products strongly requires the adoption of metal alloys with outstanding mechanical performances, to go through advanced manufacturing and/or joining processes. As such, many efforts concerning nontraditional manufacturing and joining technologies have been made in recent years through the development of new technologies or the optimization of conventional techniques.

This Special Issue aims at collecting contributions about advanced manufacturing and joining technologies used to fabricate aluminum and steel sheet parts in industry (e.g., automotive, aerospace, energy industry) through high-quality manuscripts able to point out the scientific and technical advances in these fields. Contributions can include but are not limited to:

- Advanced manufacturing processes;

- Friction stir welding, friction stir spot welding, laser welding, hybrid welding, explosive welding, ultrasonic welding, mechanical riveting and clinching and other innovative joining technologies;

- Gas forming, hydroforming, incremental forming, laser forming and other innovative forming techniques;

- Optimization of traditional manufacturing and joining processes;

- Monitoring and control of advanced manufacturing and joining processes;

- Numerical simulation of manufacturing and joining processes;

- Development of innovative tools and equipment;

- Mechanical and microstructural characterization of parts and joints;

- Heat and surface treatments of aluminum and steel sheets.

Prof. Pasquale Russo Spena
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Materials is an international peer-reviewed open access semimonthly 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 2300 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

  • Advanced manufacturing processes
  • Sheet forming
  • Welding
  • Mechanical joining
  • Numerical modeling
  • Process monitoring
  • Aluminum and steel sheet
  • Materials characterization
  • Heat and surface treatments

Published Papers (3 papers)

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Research

Article
Optimization of Resistance Spot Welding with Inserted Strips via FEM and Response Surface Methodology
Materials 2021, 14(23), 7489; https://doi.org/10.3390/ma14237489 - 06 Dec 2021
Cited by 1 | Viewed by 1005
Abstract
Resistance spot welding (RSW) with inserted strips, a recent variant of traditional RSW, was usually adopted in joining thin gage steels to lower the temperature developed at the electrode surface and to extend electrode life. In order to understand the influencing mechanism how [...] Read more.
Resistance spot welding (RSW) with inserted strips, a recent variant of traditional RSW, was usually adopted in joining thin gage steels to lower the temperature developed at the electrode surface and to extend electrode life. In order to understand the influencing mechanism how the inserted strips affect the heat transfer behavior and to optimize the selection of suitable strips, an approach integrated with FEM and response surface methodology (RSM) was employed. FEM results showed that the inserted strips would not only lead to earlier initiation of weld and bigger weld size in both diameter and thickness but also lower the electrode surface temperature. Based on FEM, uniform design and RSM were further employed to build a regression model between the strip properties (i.e., electrical/thermal conductivity, thickness) and the responses (i.e., electrode tip temperature, weld diameter, and temperature at strip/sheet interface). A graphical optimization was conducted to identify a preferable strip, and a Cu55Ni45 strip with a thickness of 0.12 mm was recommended for a 0.4 mm steel sheet. Full article
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Article
Soldering of 7075 Aluminum Alloy Using Ni-P and Cu-Cr Electrodeposited Interlayers
Materials 2020, 13(18), 4100; https://doi.org/10.3390/ma13184100 - 15 Sep 2020
Viewed by 698
Abstract
Direct soldering of the aluminum alloy 7075 is very difficult or even impossible. In order to make it possible, galvanic coatings and the procedures for their application on alloy surfaces were developed. The paper presents structures and mechanical properties of soldered joints of [...] Read more.
Direct soldering of the aluminum alloy 7075 is very difficult or even impossible. In order to make it possible, galvanic coatings and the procedures for their application on alloy surfaces were developed. The paper presents structures and mechanical properties of soldered joints of the 7075 alloy, made in indirect way with use of electrolytically deposited Ni-P and Cu-Cr coatings. Application of the newly developed Ni-P and Cu-Cr coatings on base surfaces of the 7075 alloy is described. The results of wettability examination of the S-Sn97Cu3 solder in the droplet test and by spreading on the coatings applied on the 7075 substrates are presented. The wettability angle of both coatings was lower than 30°. The results of metallographic examinations with use of light and electron microscopy are presented. It was shown that adhesion of metallic coatings to the aluminum alloy is good, exceeding shear strength of the S-Sn97Cu3 solder. Shear strength of soldered joint was equal to 35 ± 3 MPa. Measured hardness of the Ni-P interlayer reached high value of 471 HV 0.025. Full article
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Article
Investigation on the Residual Stresses and Fatigue Performance of Riveted Single Strap Butt Joints
Materials 2020, 13(15), 3436; https://doi.org/10.3390/ma13153436 - 04 Aug 2020
Cited by 4 | Viewed by 1043
Abstract
In aircraft manufacturing, riveting is one of the most important connection ways to fasten the sheet metal parts. The riveted single strap butt joints are mainly used in the load-bearing components of the aircraft such as the fuselage and wing panels. The connection [...] Read more.
In aircraft manufacturing, riveting is one of the most important connection ways to fasten the sheet metal parts. The riveted single strap butt joints are mainly used in the load-bearing components of the aircraft such as the fuselage and wing panels. The connection quality and fatigue performance of the riveted joints directly affect the reliability and safety of the aircraft. In this paper, under the assumption of constant temperature, the fatigue strengthening mechanism of interference-fit riveting is introduced based on elastic-plastic mechanics and fracture mechanics. On this basis, the finite element (FE) models of the riveted single strap butt joints with various strap thickness and rivet sizes/arrangements are established. The residual stresses distribution around the riveted hole is analyzed. Furthermore, the fatigue tests of the riveted single strap butt joints with cyclic loading are carried out. The experimental results verified the correctness and effectiveness of the simulation model. Finally, the conclusion is drawn that increasing rivet size and strap thickness within the allowable weight range can improve the fatigue performance of the riveted single strap butt joints. The knowledge could be used to guide the structural design and optimization of the riveted butt joints against fatigue. Full article
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