Special Issue "Mechanical Behavior of Welded High-Strength Alloys"

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

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 1984

Special Issue Editors

Department of Welding Engineering, Institution of Engineering and Technology, South Ural State University, 454080 Chelyabinsk, Russia
Interests: resistance welding; gas metal arc welding; quality control; online monitoring; microstructure
Special Issues, Collections and Topics in MDPI journals
Department of Mechanical Engineering, CEMMPRE, University of Coimbra, 3030-788 Coimbra, Portugal
Interests: fatigue behaviour; additive manufacturing; multiaxial fatigue; damage accumulation
Special Issues, Collections and Topics in MDPI journals
Deputy Director for Research, Sieć Badawcza Łukasiewicz–Instytut Spawalnictwa (Łukasiewicz Research Network–Institute of Welding), Gliwice, Poland
Interests: welding engineering; measuring apparatus; welding devices; welding equipment; assessment of the quality of welding processes; monitoring of welding processes; numerical calculations (especially resistance welding technologies); research stands for the purpose of welding testing; joining technologies; measurement of temperature in welding processes
Department of Production and Industrial Engineering, Birla Institute of Technology: Mesra, Ranchi 835215, India
Interests: Laser material processing, advanced welding technologies, micro-manufacturing, modeling and simulation of manufacturing processes, decision engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Lightweight and high-strength metals have been swiftly developed in recent years to overcome the challenges associated with global warming. They have been widely used not only in some limited cutting-edge fields but also in other various industrial fields, such as automotive, aerospace, shipbuilding, oil pipelines, structural industries, and so on. This widespread use can be attributed to their advantages of strength, corrosion resistance, lightweight, toughness, electrical and thermal conductivity, recyclability, and formability. Recent advanced welding issues of high-strength metals, especially the mechanical behaviors of the welded joints, need a deep understanding.

The purpose of this Special Issue is to promote the dissemination of the latest research on the welding of high-strength metals. Original contributions are encouraged to address the effects of welding schemes, chemical composition, microstructure transformation, environmental conditions, and loading history on the mechanical behavior of welded joints produced by high-strength metals. Both experimental and numerical methods are accepted.

Dr. Dawei Zhao
Dr. Fábio Fernandes
Prof. Dr. Ricardo Branco
Prof. Dr. Zygmunt Mikno
Dr. Bappa Acherjee
Guest Editors

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. 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

  • high-strength metals
  • welding techniques
  • tensile shear
  • fatigue
  • welded joints
  • loading history
  • environmental conditions
  • applications
  • microstructure
  • micro-hardness
  • modeling and simulation

Published Papers (1 paper)

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Research

17 pages, 6316 KiB  
Article
Correlating Electrode Degradation with Weldability of Galvanized BH 220 Steel during the Electrode Failure Process of Resistance Spot Welding
Crystals 2023, 13(1), 39; https://doi.org/10.3390/cryst13010039 - 26 Dec 2022
Cited by 2 | Viewed by 1278
Abstract
Electrode degradation in the continuous resistance spot-welding process of baked hardening (BH) 220 steel was evaluated by an electrode life test, and weldability tests were conducted by geometry feature measurement, mechanical property analysis, and electrode diameter measurement with 88 or 176 weld intervals. [...] Read more.
Electrode degradation in the continuous resistance spot-welding process of baked hardening (BH) 220 steel was evaluated by an electrode life test, and weldability tests were conducted by geometry feature measurement, mechanical property analysis, and electrode diameter measurement with 88 or 176 weld intervals. The analysis of weld geometry shows that the heat-affected zone (HAZ) width, nugget diameter, and nugget area tend to decrease rapidly, while the nugget height tends to increase with the weld repetitions until the welding heat input becomes too small to form an effective nugget. The maximum displacement and failure energy of the welded joints show a decreasing trend during the welding electrode failure process, while the peak load increases slightly until the 88th weld and then decreases. The cavities and pores in the nugget mainly appear after the 176th spot weld. The electrode diameter increases during welding. The reason for the increase in electrode diameter may be that the contact area between the electrode and the BH 220 steel sheets becomes smaller in the welding process, which causes the continuous sticking phenomenon between the electrode and the BH 220 steel sheets. In the absence of alloying, the edge of the electrode is geometrically deformed, while Cu–Zn–Fe alloying occurs in the area in contact with the BH 220 steel sheet. Full article
(This article belongs to the Special Issue Mechanical Behavior of Welded High-Strength Alloys)
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