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Advances in Welding Processes of Metallic Materials—2nd Edition
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Advances in Welding Processes of Metallic Materials—2nd Edition

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

Deadline for manuscript submissions: 30 November 2026 | Viewed by 2212

Special Issue Editor

Dr. Zhengwei Li

E-Mail Website
Guest Editor
State Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin, China
Interests: welding and joining; ultrasonic soldering; brazing; cavitation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Welding and joining, as the earliest connection methods used by human beings, have been employed for a very long time. Welding and joining are extensively utilized in various fields and have received signficant attention in recent years due to the development of aviation, aerospace, nuclear energy, electronics and other novel technologies.

This Special Issue, entitled “Advances in Welding Processes of Metallic Materials—2nd Edition”, welcomes the submission of articles that address the welding and joining of all kinds of materials. The scope of this Special Issue includes, but is not limited to, the following topics: process optimization; experiments; simulation; metallurgical behavior; intermetallic compounds; and the fracture behavior of welded/joined joints using various welding methods.

Dr. Zhengwei Li
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 250 words) can be sent to the Editorial Office for assessment.

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

  • welding
  • joining
  • soldering
  • joint
  • failure

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Related Special Issue

Published Papers (3 papers)

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Research

32 pages, 19480 KB  
Article
Influence of Punch Shape on Joint Strength in Forge Joining of Al-Si-Coated 22MnB5 Steel During Hot Stamping and Application to Hat Bending
by Jarupong Charoensuk, Takuma Iwai, Surasak Suranuntchai and Tomoyoshi Maeno
Metals 2026, 16(4), 376; https://doi.org/10.3390/met16040376 - 28 Mar 2026
Viewed by 395
Abstract
Ultra-high-strength steel sheets were joined by forge joining during hot stamping. This study investigated the influence of punch cross-sectional shape and punch tip inclination shape on joint strength through experiments and finite element simulation, with applications in hat bending. The experiments systematically evaluated [...] Read more.
Ultra-high-strength steel sheets were joined by forge joining during hot stamping. This study investigated the influence of punch cross-sectional shape and punch tip inclination shape on joint strength through experiments and finite element simulation, with applications in hat bending. The experiments systematically evaluated various punch geometries by varying the punch’s cross-sectional shape and the aspect ratio of rectangular punches. A second set of experiments focused on the influence of punch tip inclination shape. These experiments examined a rectangular punch with a slope. Joint strength is primarily assessed by measuring the tensile shear load. Finite element simulation was used to analyze joining mechanisms, investigating contact pressure and surface expansion rate distribution. The results from the experiments consistently indicated that, for a constant cross-sectional area, punch shapes with a larger punch perimeter on the upper sheet yielded a higher tensile shear load, though the changing inclination shape of the rectangular punch tip did not lead to an observed improvement in joint strength. Finite element simulation analysis revealed that punch shapes promoting a uniform distribution of contact pressure and surface expansion rate across the joint area tended to exhibit higher joint strength compared with the same punch cross-sectional area but less uniform distribution, a tendency that was more pronounced for the distribution of contact pressure than for the surface expansion rate. Full article
(This article belongs to the Special Issue Advances in Welding Processes of Metallic Materials—2nd Edition)
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18 pages, 15816 KB  
Article
Effect of the Welding Electrode Geometry on the Peak Load, Energy Absorption, Fracture Type, and Microstructure of Resistance Spot-Welded Dissimilar Ultra-High Strength MS1500 and SPFC590 Steels
by Mehmet Okan Görtan and Ümit Türkmen
Metals 2026, 16(2), 155; https://doi.org/10.3390/met16020155 - 27 Jan 2026
Viewed by 500
Abstract
In the present study, the effects of electrode geometry and welding current on the tensile-shear strength, failure energy, fracture type, and joint microstructure were investigated during the RSW of ultra-high-strength MS1500 steel to high-strength low-alloy SPFC590 steel, both 1.2 mm in thickness. Three [...] Read more.
In the present study, the effects of electrode geometry and welding current on the tensile-shear strength, failure energy, fracture type, and joint microstructure were investigated during the RSW of ultra-high-strength MS1500 steel to high-strength low-alloy SPFC590 steel, both 1.2 mm in thickness. Three electrode geometries—designated as G0-6 mm, G0-8 mm, and A0—recommended for 1.2 mm sheets according to ISO 5821 were examined. It was found that in the G0-6 mm electrode geometry, which has the smallest contact area, excessive expulsion occurred at lower current levels compared to the other geometries. Consequently, this configuration resulted in lower maximum tensile-shear strength and failure energy values. The highest mechanical performance was achieved with the G0-8 mm electrode geometry, where the tensile-shear strength and failure energy were measured as 19.42 kN and 43.81 J, respectively. For the A0 electrode, although the maximum tensile-shear strength (19.68 kN) was comparable to that of the G0-8 mm geometry, the failure energy was approximately 7% lower (40.94 J). For all electrode geometries corresponding to maximum mechanical strength, a pull-out failure mode was observed, where the nugget region of the SPFC590 steel detached from the base metal and remained adhered to the ultra-high-strength MS1500 sheet. Full article
(This article belongs to the Special Issue Advances in Welding Processes of Metallic Materials—2nd Edition)
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16 pages, 3666 KB  
Article
Finite Element Analysis for Restraint Intensity and Welding Residual Stress of the Lehigh Specimen Made of Ti80 Alloy
by Liang Zhang, Gang Song, Qi Wang, Dongjie Chen, Xiaolei Guo, Chang Dai and Weixin Bu
Metals 2025, 15(9), 1019; https://doi.org/10.3390/met15091019 - 13 Sep 2025
Viewed by 974
Abstract
Ti80 alloy is one of the most commonly used marine titanium alloys but faces cold cracking risks in thick plate welding. Understanding the relationship between restraint intensity and welding residual stress is critical for industrial applications. This study employs finite element methods to [...] Read more.
Ti80 alloy is one of the most commonly used marine titanium alloys but faces cold cracking risks in thick plate welding. Understanding the relationship between restraint intensity and welding residual stress is critical for industrial applications. This study employs finite element methods to quantify the restraint intensity of Lehigh specimens and establish its quantitative link with welding residual stress in Ti80 alloy. Simulations reveal that restraint intensity increases linearly with plate thickness and decreases linearly with slot depth. A binary linear regression model accurately predicts restraint intensity with relative error of less than 6%. Furthermore, welding simulations demonstrate that residual stress on the weld bead’s upper surface increases exponentially with restraint intensity, while the lower surface shows a linear increase. Exponential and linear fits were applied to predict residual stress on the upper and lower surface, respectively. Validation confirms prediction errors for residual stress are below 9%. This work provides a methodology to assess cracking susceptibility and residual stress in actual Ti80 components by matching restraint conditions with Lehigh specimens. Full article
(This article belongs to the Special Issue Advances in Welding Processes of Metallic Materials—2nd Edition)
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