Advanced Laser Welding Technologies for Metals and Alloys

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

Deadline for manuscript submissions: 20 May 2024 | Viewed by 636

Special Issue Editor

State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Interests: laser welding; ultrafast laser micro/nano-processing

Special Issue Information

Dear Colleagues,

We are pleased to extend an invitation for you to contribute to our upcoming Special Issue on 'Advanced Laser Welding Technologies for Metals and Alloys,' which will be published in Metals.

Laser welding technology has rapidly evolved over the years, emerging as a pivotal method for joining metals and alloys in various industries. The precise control of laser energy, minimal heat-affected zones, and superior weld quality make it a compelling choice. As this field continues to grow, it is imperative to consolidate and disseminate the latest research, innovations, and applications in this area. This Special Issue aims to do just that.

Our journal has always been committed to promoting cutting-edge research in materials science and engineering. The topic of 'Advanced Laser Welding Technologies for Metals and Alloys' aligns perfectly with our journal's scope as it addresses a vital aspect of materials science and engineering, highlighting the synergy between technological advancements and material properties. We believe that this Special Issue will enrich our journal's content and further our mission of advancing scientific knowledge.

We invite you to contribute any original research article or review that explores, but is not limited to, the following themes:

  • Laser welding processes and mechanisms;
  • Materials and alloys in laser welding;
  • Process optimization and control techniques;
  • Weld quality assessment and performance;
  • Industrial applications and case studies;
  • Emerging trends and future directions.

We are confident that your expertise and research contributions would greatly enhance the quality and diversity of this Special Issue, and that your valuable insights into this topic would be highly appreciated by our readers and the scientific community.

Thank you for considering our invitation. Your participation would undoubtedly make this Special Issue a resounding success.

Dr. Zhi Luo
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 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. 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

  • laser welding
  • metals
  • alloys
  • weld quality
  • process optimization
  • heat-affected zone
  • welding mechanisms
  • microstructure analysis

Published Papers (1 paper)

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Research

18 pages, 8773 KiB  
Article
Microstructure, Variant Selection, and Mechanical Properties of Laser-Welded Ti-4Al-2V Joints
by Yonghui Zhu, Lili Lu, Chenlu Zhang, Jun Yuan, Chao Fu and Lu Wang
Metals 2024, 14(4), 405; https://doi.org/10.3390/met14040405 - 29 Mar 2024
Viewed by 483
Abstract
Laser welding of the near α-phase titanium alloy Ti-4Al-2V, used for complex components in the nuclear industry, has been rarely reported. In this study, butt weld joints made of Ti-4Al-2V alloy plates under different parameters, including the laser power, the welding speed, and [...] Read more.
Laser welding of the near α-phase titanium alloy Ti-4Al-2V, used for complex components in the nuclear industry, has been rarely reported. In this study, butt weld joints made of Ti-4Al-2V alloy plates under different parameters, including the laser power, the welding speed, and the defocus distance, were manufactured and analyzed. The results showed that adjusting the combination of 4.2 kW of laser power, a 20 mm/s welding speed, and a −2 mm defocus distance could achieve a penetration depth exceeding 6 mm. Porosity defects were prone to forming in the middle and bottom parts of the fusion zone, due to rapid cooling. The microstructure of the fusion zone was mainly needle-like α martensite, which precipitated in the form of specific clusters. The interior of a cluster was composed of three types of variants with <11−20>/60° phase interfaces to achieve the lower boundary’s energy. Affected by the microstructure and welding defects, the strength of the weld joint was basically similar under different welding conditions, namely about 720 MPa, slightly higher than that of the base metal, while the rupture elongation at breaking decreased by more than 50%. The micro-Vickers hardness of the weld joints was about 50–60 HV higher than that of the base metal, while the impact toughness was about 40 KJ, almost half that of the base metal. This research lays a solid foundation for the engineering application of laser welding of Ti-4Al-2V alloys. Full article
(This article belongs to the Special Issue Advanced Laser Welding Technologies for Metals and Alloys)
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