Quality Evaluation of Welding Processes for Metals

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

Deadline for manuscript submissions: closed (31 January 2026) | Viewed by 962

Special Issue Editor

School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: resistance spot welding; dissimilar metal; measure and control; intelligent system
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Recently, welding processes have been widely applied in industrial manufacturing areas. The welding quality is critical to the safety, reliability, and service life of various metal structures, and is closely related to the precise control of metallurgical phenomena. Metal phases, grain growth and refinement, and precipitation behaviors induced by thermal cycles directly govern microstructural evolution in welds and heat-affected zones, determining joint mechanical properties and service reliability.

This Special Issue focuses on metallurgical quality assessment methodology for metal welding, which covers intelligent defect detection, mechanical performance prediction by non-destructive testing, process parameter optimization, and standardization research. By integrating in situ characterization, computational metallurgy, and multi-parameter optimization, this Special Issue aims to advance welding quality evaluation from experience-based to data-driven approaches, which employ various mathematical or artificial intelligent tools, to ensure the structural integrity of metal components and  in various industrial occasions and providing theoretical foundations for developing new metal welding process for extreme service conditions. 

Dr. Kang Zhou
Guest Editor

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Keywords

  • welding quality
  • phase transition, quality assessment
  • artificial intelligent, data-driven approaches
  • parameter optimization
  • standardization research

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Published Papers (1 paper)

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Research

34 pages, 10857 KB  
Article
Effect of Welding Heat Input on Corrosion Behavior of Duplex Stainless Steel Welding Overlay on Carbon Steel
by Anael Furquim Junior, Carlos Roberto Camello Lima, Alexandre Borghi Cunha, Fabio Henrique Silva Delfino, Francisco Mateus Faria de Almeida Varasquim, Eli Jorge da Cruz Junior and Givanildo Alves dos Santos
Metals 2026, 16(2), 207; https://doi.org/10.3390/met16020207 - 11 Feb 2026
Cited by 1 | Viewed by 625
Abstract
The present study investigates the effect of welding heat input on the corrosion resistance of duplex stainless steel (DSS) overlays, with particular focus on applications in pressure vessels and clad plates. ER2209 filler metal was deposited onto SA-516 Gr. 70 carbon steel using [...] Read more.
The present study investigates the effect of welding heat input on the corrosion resistance of duplex stainless steel (DSS) overlays, with particular focus on applications in pressure vessels and clad plates. ER2209 filler metal was deposited onto SA-516 Gr. 70 carbon steel using GMAW, both manually and mechanized, with varying heat inputs. Microstructural characterization included ferrite-content measurement, macrographic analysis, and pitting-corrosion testing according to ASTM G48 Method A. The results indicate that increasing the heat input from 548 J mm−1 to 2319 J mm−1 significantly reduced the ferrite content from 49% to 25%, leading to a corresponding increase in weight loss from 0.55% to 2.5%. Mechanized welding exhibited better arc stability and more consistent phase distribution compared to the manual process. Although we did not detect brittle phases or intermetallic precipitates due to strict interpass temperature control, the microstructural imbalance induced by high-heat-input directly compromised the corrosion resistance. These findings advance understanding of the optimized welding parameters required to ensure the integrity of DSS coatings in aggressive environments. Full article
(This article belongs to the Special Issue Quality Evaluation of Welding Processes for Metals)
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