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<p>This study determined the best joining parameters for fibre laser welding to join stainless steel 202 and stainless steel 304, using the Taguchi L9 method and Analysis of Variance (ANOVA). The experiments were conducted using laser power ranging from 1.2 to 1.8&#xa0;kW, welding speed of 800–1200&#xa0;mm/min, and shielding gas flow rate of 12–18&#xa0;L/min. The main findings being measured are the final tensile strength (from 470 to 600&#xa0;MPa). The signal-to-noise ratio indicated the strongest welds were achieved with 1.5&#xa0;kilowatts of laser power, a welding speed of 1000&#xa0;mm per minute, and a shielding gas flow of 18&#xa0;L per minute. ANOVA showed laser power to be the most important parameter (62% of the effect), then arc speed (24%) and Gas flux (10%). The UTS predicted at the optimized parameters is 585&#xa0;MPa, but the experimental result gave 590&#xa0;MPa (less than 1% error). The modified parameters enhanced the strength of the laser power join by 18% relative to the unsatisfactory values. The Tafel plot investigation revealed that 304 stainless steel exhibited the highest corrosion resistance&#xa0;among the materials. The SS202-SS304 welded joint&#xa0;exhibited adequate corrosion resistance. The optimal parameters (1.5&#xa0;kW, 1000&#xa0;mm/min, 18&#xa0;L/min) minimized corrosion rate to 0.037&#xa0;mm/year.</p>

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Optimization of Mechanical Behaviour and Corrosion Performance of Fiber Laser Dissimilar Welding of SS202 and SS304 Using Taguchi–ANOVA Approach

  • 期刊论文

  • 发表日期：

    2026年6月3日

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  • Sujeet Kumar,
  • Naveen Srinivas Madugula,
  • Nanditha S. Matad,
  • Naveen Kumar,
  • S. Harish,
  • Channabasava,
  • M. A. Karthik,
  • B. N. Deepak Kumar,
  • B. K. Pavan Kumar,
  • T. S. Shruthi

摘要

This study determined the best joining parameters for fibre laser welding to join stainless steel 202 and stainless steel 304, using the Taguchi L9 method and Analysis of Variance (ANOVA). The experiments were conducted using laser power ranging from 1.2 to 1.8 kW, welding speed of 800–1200 mm/min, and shielding gas flow rate of 12–18 L/min. The main findings being measured are the final tensile strength (from 470 to 600 MPa). The signal-to-noise ratio indicated the strongest welds were achieved with 1.5 kilowatts of laser power, a welding speed of 1000 mm per minute, and a shielding gas flow of 18 L per minute. ANOVA showed laser power to be the most important parameter (62% of the effect), then arc speed (24%) and Gas flux (10%). The UTS predicted at the optimized parameters is 585 MPa, but the experimental result gave 590 MPa (less than 1% error). The modified parameters enhanced the strength of the laser power join by 18% relative to the unsatisfactory values. The Tafel plot investigation revealed that 304 stainless steel exhibited the highest corrosion resistance among the materials. The SS202-SS304 welded joint exhibited adequate corrosion resistance. The optimal parameters (1.5 kW, 1000 mm/min, 18 L/min) minimized corrosion rate to 0.037 mm/year.