Welding Dissimilar Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Metals and Alloys".

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 1791

Special Issue Editors


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Guest Editor
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
Interests: brazing; surface activation bonding; laser modification; microstructure

E-Mail Website
Guest Editor
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
Interests: wetting; ion bombardment activation; brazing; finite element simulation; materials characterization

Special Issue Information

Dear Colleagues,

This Special Issue focuses on the welding of dissimilar materials. The performance and application capabilities of materials often depend on their integrations, which in turn are affected by many variables. The current issue will explore the mechanisms, methods, and techniques of welding dissimilar materials and discuss their impact on material properties and applications. We will delve into applications of dissimilar-material welding in energy, the environment, healthcare, electronics, and other fields. By reading this Special Issue, readers will gain a deep understanding of welding among various kinds of structural and functional materials and their potential in actual service scenarios. We are pleased to invite you to contribute your findings and insights on the dissimilar-material welding. We encourage authors to submit papers on fundamental aspects, experimental investigations, and theoretical analyses of welding in structural and functional materials.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but not limited to) the following:

Characterization of welding joints in relation to key application areas;

Welding structure and interface analysis;

Mechanical and micromechanical behavior of welding joints;

Lifetime prediction and durability assessment;

Microstructural and mechanical analysis techniques;

Defect assessment and identification at various stages;

Damage classification and corrosion resistance evaluation;

Advanced non-destructive techniques for monitoring the welding process;

Methods for predicting welding joint degradation;

Surface treatments for enhancing dissimilar-material welding;

Welding joints: integration and applications in structural and functional materials.

Dr. Yanyu Song
Dr. Shengpeng Hu
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. Crystals 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

  • brazing
  • diffusion bonding
  • laser welding
  • fraction stir welding
  • microstructure
  • mechanical property
  • finite element simulation

Published Papers (2 papers)

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Research

15 pages, 197795 KiB  
Article
Weldability of Additively Manufactured Powder Bed Fusion 316L Stainless Steel Using Arc and Laser Welding
by Koen Faes, Rafael Nunes, Florian Probst, Robin Ceuppens and Wim De Waele
Crystals 2024, 14(4), 303; https://doi.org/10.3390/cryst14040303 - 25 Mar 2024
Viewed by 702
Abstract
The use of additive manufacturing for metallic materials presents a wide range of possibilities for industrial applications. The technology offers several advantages, including weight optimisation and the ability to create complex geometries. However, because of the inherent characteristics of the manufacturing process, the [...] Read more.
The use of additive manufacturing for metallic materials presents a wide range of possibilities for industrial applications. The technology offers several advantages, including weight optimisation and the ability to create complex geometries. However, because of the inherent characteristics of the manufacturing process, the dimensions of the produced objects are frequently constrained. In some cases, it may be necessary to join two additively manufactured parts together or to join such parts with an existing, conventionally manufactured structure. Evaluating welding processes for joining additively manufactured workpieces is a crucial step in this development. In this work, the welding of additively manufactured powder bed fusion 316L stainless steel components is discussed. The welding processes considered are manual TIG, manual and robotic MIG/MAG and laser welding. All optimised welds were of good quality and did not show any weld imperfections. All welds fulfil the requirements of standard ISO 15614-1 for the tensile and bend test results and for the hardness values. It can be concluded that the investigated processes are feasible for welding additively manufactured parts. Full article
(This article belongs to the Special Issue Welding Dissimilar Materials)
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14 pages, 4745 KiB  
Article
Mechanical Response of Cu/Sn58Bi-xNi/Cu Micro Solder Joint with High Temperatures
by Xiangxia Kong, Junjun Zhai, Ruipeng Ma, Fenglian Sun and Xuemei Li
Crystals 2024, 14(3), 269; https://doi.org/10.3390/cryst14030269 - 10 Mar 2024
Viewed by 790
Abstract
Sn58Bi solder is considered a promising lead-free solder that meets the performance requirements, with the advantages of good wettability and low cost. However, the low melting point characteristic of Sn58Bi poses a serious threat to the high-temperature reliability of electronic products. In this [...] Read more.
Sn58Bi solder is considered a promising lead-free solder that meets the performance requirements, with the advantages of good wettability and low cost. However, the low melting point characteristic of Sn58Bi poses a serious threat to the high-temperature reliability of electronic products. In this study, Sn58Bi solder alloy based on nickel (Ni) functionalization was successfully synthesized, and the effect of a small amount of Ni on creep properties and hardness of Cu/Sn58Bi/Cu micro solder joints at different temperatures (25 °C, 50 °C, 75 °C, 100 °C) was investigated using a nanoindentation method. The results indicate that the nanoindentation depth of micro solder joints exhibits a non-monotonic trend with increasing Ni content at different temperatures, and the slope of the indentation stage curve decreases at 100 °C, showing that the micro solder joints undergo high levels of softening. According to the observation of indentation morphology, Ni doping can reduce the indentation area and accumulation around the indentation, especially at 75 °C and 100 °C. In addition, due to the severe creep phenomenon at 100 °C, the indentation hardness rapidly decreases. The indentation hardness values of micro solder joints of Cu/Sn58Bi/Cu, Cu/Sn58Bi-0.1Ni/Cu, and Cu/Sn58Bi-0.2Ni/Cu at 100 °C are 14.67 ± 2.00 MPa, 21.05 ± 2.00 MPa, and 20.13 ± 2.10 MPa, respectively. Nevertheless, under the same temperature test conditions, the addition of Ni elements can improve the high-temperature creep resistance and hardness of Cu/Sn58Bi/Cu micro solder joints. Full article
(This article belongs to the Special Issue Welding Dissimilar Materials)
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