Effects of welding parameters on percentage dilution and mechanical properties in welded joints of ultra-high hardness armour steels
J. Min. Metall. Sect. B-Metall., 61 (3) (2025) 293-302. DOI:10.2298/JMMB231211023V
Full text (pdf)
Export manuscript information:
RIS Format (EndNote, Reference Manager), BibTeX
Available online 25 November 2025
(Received 11 December 2023; Accepted 06 November 2025)
doiSerbia
This study investigates the effects of Gas Metal Arc Welding (GMAW) parameters—specifically welding speed and stick-out—on the dilution and mechanical properties of welded joints composed of ultra-high hardness quenched and tempered (UHH-Q&T) armor steel and austenitic stainless steel filler metal. An optimization methodology was used to set constant parameters, including wire diameter, gas flow rate, welding voltage, and wire feed speed, based on equipment capabilities. Experimental trials varied welding speed and electrode stick-out while maintaining a constant current through inductance control. Although the welding parameters affected the melted base and filler metal areas, the dilution percentage remained unaffected. The correlation between dilution and welding current was validated. Microstructural and mechanical analyses confirmed the consistent behavior of the welded joints under the tested conditions.
Keywords: Ultra-high hardness steel; GMAW; Dilution; Heat-affected zone; Mechanical properties
Correspondence Address:
Charles Hudson Martins de Vasconcelos,
Military Institute of Engineering – IME, Graduate Program in Materials Science and Engineering, Rio de Janeiro, RJ, Brazil; Instruction Center Almirante Braz de Aguiar – CIABA, Belem, PA, Brazil;
email: charles.vasconcellos@ime.eb.br
This work is licensed under a
Creative Commons Attribution-
ShareAlike 4.0 International License