Advances in Welding Science and Technology for Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Welding and Joining".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 13321

Special Issue Editors


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Guest Editor
Ingeniería de los Procesos de Fabricación, Departamento CMeIM/EGI/ICGF/IM/IPF, Universidad de Valladolid, Escuela de Ingenierías Industriales, Paseo del Cauce 59, 47011 Valladolid, Spain
Interests: welding; stainless steels; superalloys
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Ciencia de los Materiales e Ingeniería Metalúrgica, Departamento CMeIM/EGI/ICGF/IM/IPF, Universidad de Valladolid, Escuela de Ingenierías Industriales, Paseo del Cauce 59, 47011 Valladolid, Spain
Interests: welding; tool wear; stainless steels
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The joining of metals dates back to the Bronze and Iron Ages. Among the metal joining techniques, welding, which began to develop as a modern process in the 19th century with the birth of electric arc welding and electric resistance welding, certainly stands out.

As welding is halfway between science and technology, its progress has historically been linked to both scientific and technological advances. Thus, welding metallurgy studies the interaction between the physico-chemical properties of the metal and the variables of the welding process, as well as the effect of this interaction, on microstructure, mechanical properties and in-service behavior of the welded joint. It is undoubtedly a challenge that is both complex and fascinating.

Since its beginnings, the development of welding processes has been kept in step with, on the one hand, the evolution of metals and alloys and, on the other hand, the requirements of society and industry, which often change at breakneck speed. Scientifically based advances in welding processes are reflected in efficient technologies at the service of an increasingly demanding society and an increasingly competitive industry.

The aim of this Special Issue is precisely to contribute to a significant advance, both scientifically and technologically, in both fusion welding and solid-state welding. Advances of interest are within, but not limited to, the following topics: characterization, quality control, modeling and simulation, welding process optimization and in-service behavior.

Prof. Dr. Óscar Martín
Prof. Dr. Pilar De Tiedra
Guest Editors

Manuscript Submission Information

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Keywords

  • resistance spot welding
  • arc welding
  • laser welding
  • fusion welding
  • solid-state welding
  • welding metallurgy
  • mechanical properties
  • in-service behavior

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Published Papers (4 papers)

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Research

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14 pages, 8595 KiB  
Article
Effect of CMT Welding Heat Input on Microstructure and Properties of 2A14 Aluminum Alloy Joint
by Yili Zhao, Furong Chen, Silong Cao, Chao Chen and Ruijun Xie
Metals 2022, 12(12), 2100; https://doi.org/10.3390/met12122100 - 7 Dec 2022
Cited by 10 | Viewed by 2549
Abstract
Cold metal transfer (CMT) welding is an attractive welding technology for thin sheet aluminum alloys because of its low heat input, arc stability and spatter-free behavior during the welding process. The present research is mainly concerned with the effect of different heat input [...] Read more.
Cold metal transfer (CMT) welding is an attractive welding technology for thin sheet aluminum alloys because of its low heat input, arc stability and spatter-free behavior during the welding process. The present research is mainly concerned with the effect of different heat input on microstructure and mechanical properties of CMT welding 2A14 aluminum alloy in 3 mm thickness. The results indicate that a welded joint with good quality can be achieved when the welding current is 105 A and welding speed is 8 mm/s. The weld width and porosity gradually increase along with the constantly increasing welding heat input. The center of the welded joint consists of a large number of fine equiaxed dendrites, and the gray matrix is uniformly distributed accompanied by a large number of dots and blocks as a white second phase, corresponding to the composition of the Al2Cu phase. The microhardness of welded joints under different welding heat input maintains relative stability and presents a certain softening degree; the base material is the highest, followed by the heat-affected zone. Full article
(This article belongs to the Special Issue Advances in Welding Science and Technology for Metallic Materials)
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15 pages, 7554 KiB  
Article
Effects of Thermal Shock on the Microstructures and Mechanical Properties Evolution of 310S Welded Joints at 1100 °C
by Yunlu Jiang, Ying Kan, Changzhong Wu and Huaining Chen
Metals 2022, 12(10), 1685; https://doi.org/10.3390/met12101685 - 9 Oct 2022
Cited by 2 | Viewed by 2456
Abstract
In order to reveal the effects of the glass solidification bottling process of high-level liquid radioactive wastes on the welded joints of containers, the microstructure evolution and mechanical properties of 310S stainless steel welded joints were investigated. For this purpose, samples were heat-treated [...] Read more.
In order to reveal the effects of the glass solidification bottling process of high-level liquid radioactive wastes on the welded joints of containers, the microstructure evolution and mechanical properties of 310S stainless steel welded joints were investigated. For this purpose, samples were heat-treated in a resistance furnace at 1100 °C, with two groups of samples being thermally shocked and heat-treated in the furnace. The results indicated that the grain-size distribution changed from unimodal to bimodal for the thermally shocked samples, which was caused by abnormal growth due to the grain growth driving force during recrystallization. Spinel oxide ((Fe, Cr, Ni)3O4) and Cr2O3 were the main oxides at 1100 °C. The dislocations almost disappeared and needle-like structures that were rich in N and Cr formed in the welded joints after being thermally shocked. The tensile properties of the thermally shocked welded joints showed decreases in yield strength and plasticity. The fracture morphologies of the samples heated in the furnace and the as-welded samples presented with dimples. However, the morphologies of the fracture surfaces of the thermally shocked samples presented large numbers of secondary cracks and smooth characteristics. Full article
(This article belongs to the Special Issue Advances in Welding Science and Technology for Metallic Materials)
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Review

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22 pages, 5718 KiB  
Review
Advances in Robotic Welding for Metallic Materials: Application of Inspection, Modeling, Monitoring and Automation Techniques
by David Curiel, Fernando Veiga, Alfredo Suarez and Pedro Villanueva
Metals 2023, 13(4), 711; https://doi.org/10.3390/met13040711 - 5 Apr 2023
Cited by 5 | Viewed by 4681
Abstract
The robotic welding manufacturing of metal parts is a very important process, especially in heavy industries such as shipbuilding, oil and gas, automotive, and aerospace. There is a great variety of different techniques for manufacturing by robotic welding, and the welding operations are [...] Read more.
The robotic welding manufacturing of metal parts is a very important process, especially in heavy industries such as shipbuilding, oil and gas, automotive, and aerospace. There is a great variety of different techniques for manufacturing by robotic welding, and the welding operations are always in a constant process of evolution, as any advance can be significant to avoid defects during the welding process. Although a great deal of research work has been carried out in recent years, thanks to which results and reviews have been presented on this subject, the main aim of this publication is to define and review works that show the advances in the main inspection, modeling, monitoring, and automated operations during the welding process to avoid, or predictively identify, any possible defect in order to obtain an optimum degree of quality in the welding. Full article
(This article belongs to the Special Issue Advances in Welding Science and Technology for Metallic Materials)
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11 pages, 432 KiB  
Review
Advances in the Control and Improvement of Quality in the Resistance Spot Welding Process
by Óscar Martín and Pilar De Tiedra
Metals 2022, 12(11), 1810; https://doi.org/10.3390/met12111810 - 25 Oct 2022
Cited by 9 | Viewed by 2658
Abstract
This work aims to respond to the need derived from the highly changing and competitive nature of the industrial environment in which the resistance spot welding (RSW) process is implemented, providing an updated and structured comprehensive overview of the advances that are being [...] Read more.
This work aims to respond to the need derived from the highly changing and competitive nature of the industrial environment in which the resistance spot welding (RSW) process is implemented, providing an updated and structured comprehensive overview of the advances that are being made in the field of quality control and the improvement of quality for this manufacturing process. Full article
(This article belongs to the Special Issue Advances in Welding Science and Technology for Metallic Materials)
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