Investigations on the Properties of Welded Metallic Materials

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 2322

Special Issue Editor

National Manufacturing Institute Scotland, University of Strathclyde, Renfrew PA4 9LJ, UK
Interests: material characterization; microstructure; forming processes; finite element simulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Due to the pressing demands for weight reduction and energy efficiency in both land and air transportation, the usage of lightweight materials has been increasing rapidly in recent years. As one of the lightweighting structures, tailor welded blanks (TWBs) are single-piece semi-finished parts produced by joining sheets of the same or different gauges or sheets of different alloys using a variety of welding methods. Typical joining technologies involve arc welding, tungsten inert gas welding (TIG), laser beam welding (LBW), friction stir welding (FSW), etc.

This Special Issue focuses on the Properties of Welded Metallic Materials. As such, the scope is somewhat broad and includes properties related to all techniques mentioned above. For example, laser welding has been attractive for industrial applications due to its high productivity, flexibility, reliability and precision. However, aluminum alloys are some of the most challenging metals to weld by laser. Friction stir welding is a solid-state welding technique developed to join parts comprising either the same or different materials. Researchers have found that the properties of welded materials are significantly affected by welding parameters (power source, welding speed, etc.), especially for heat-treatable alloys. This is because different welding parameters result in different weld shapes, microstructures, phase distributions, or temper conditions, leading to significant variations in the post-welding properties.

For this Special Issue, we look forward to articles investigating the underlying mechanisms between welding processes and microstructure, which eventually determine the post-welding properties. We also welcome the submission of papers reporting on the development of numerical models for welded materials which can simulate deformation behavior or predict mechanical properties under complex loading conditions.

Dr. Jun Liu
Guest Editor

Manuscript Submission Information

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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

  • aluminum
  • titanium
  • steel
  • tailor welded blanks
  • welding
  • mechanical properties
  • strain
  • formability
  • plasticity
  • lightweight

Published Papers (1 paper)

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Research

24 pages, 13166 KiB  
Article
The Influence of Water Flow Characteristics on the Physical and Mechanical Qualities of Underwater Wet Welded A36 Marine Steel Plate
by Eko Surojo, Nurul Muhayat, Eko Prasetya Budiana, Airlangga Putra Aridharma, Yudit C. N. Nyoto Saputro, Tuswan Tuswan, Ericha Dwi Wahyu Syah Putri, Aditya Rio Prabowo and Triyono Triyono
Metals 2022, 12(8), 1295; https://doi.org/10.3390/met12081295 - 31 Jul 2022
Cited by 2 | Viewed by 2017
Abstract
Underwater welding has proven to be a successful method of joining two similar or dissimilar metals and takes place underwater. This technique is frequently used for maintenance purposes, such as repairing piping systems, ships, and other marine structures. This study investigates the effect [...] Read more.
Underwater welding has proven to be a successful method of joining two similar or dissimilar metals and takes place underwater. This technique is frequently used for maintenance purposes, such as repairing piping systems, ships, and other marine structures. This study investigates the effect of different water flow types on an underwater weld’s physical and mechanical properties of welded bead on the A36 steel plate. The SMAW method with an E7018 electrode is used for welding A36 steel in saltwater. In this simulation, underwater welding is performed using three types of flow (without flow, non-uniform flow with a baffle plate, and non-uniform flow without a baffle plate) to compare metallography, hardness, tensile, impact, and bending testing results. The findings revealed that the saltwater flow caused more porosity defects. Moreover, the highest penetration depth was observed in specimens with the non-uniform flow with a baffle plate. The heat energy is concentrated due to droplets accumulating in the weld area. The microstructure of welding metals such as acicular ferrite and ferrite with the second phase grows as the water flow becomes non-uniform. Furthermore, as the rate and variability of the water flow increased, the value of the mechanical properties of the specimens increased relatively. Full article
(This article belongs to the Special Issue Investigations on the Properties of Welded Metallic Materials)
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