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<p>This study focused on maximizing the strengths, microstructure analysis, and corrosion behavior of magnesium (AZ31B) and aluminum (Al 5052) reinforced laminate composites fabricated through explosive welding. To maximize the strengths, explosive welding parameters were optimized using RSM (response surface methodology). According to the central composite design, 31 experiments were conducted by altering the operational parameters such as loading ratio (R: 0.7–0.9), standoff distance (SD: 4–8&#xa0;mm), angle of inclination (AI: 0–4), and amount of silicon carbide (SiCp: 0–2%). Mathematical models are developed to establish the correlation between the parameters and responses (shear strength and ram tensile strength). The fitness of the developed models was validated using the analysis of variance (ANOVA), and confirmation experiments were conducted to verify the precision of the estimated values. The microstructural study revealed that in wire mesh reinforced weld (AZ31B/WM/Al 5052), cracks formed near the joining interface, whereas no such defect was observed in 1%SiCp reinforced weld (AZ31B/WM/1%SiCp/Al 5052). In addition, corrosion analysis revealed that after 120 days of immersion in a marine broth solution, the fabricated silicon carbide-reinforced composite showed no significant degradation (0.039&#xa0;g/cm<sup>2</sup>).</p>

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Study on parametric optimization, microstructure, and corrosion behaviour of explosive weld AZ31B and al 5052 laminate composite with reinforcements

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Prabhat Kumar,
  • Subrata Kumar Ghosh,
  • Somasundaram Saravanan,
  • John Deb Barma,
  • Pritam Das,
  • Samuel Debbarma,
  • Yashesh Ahirwar

摘要

This study focused on maximizing the strengths, microstructure analysis, and corrosion behavior of magnesium (AZ31B) and aluminum (Al 5052) reinforced laminate composites fabricated through explosive welding. To maximize the strengths, explosive welding parameters were optimized using RSM (response surface methodology). According to the central composite design, 31 experiments were conducted by altering the operational parameters such as loading ratio (R: 0.7–0.9), standoff distance (SD: 4–8 mm), angle of inclination (AI: 0–4), and amount of silicon carbide (SiCp: 0–2%). Mathematical models are developed to establish the correlation between the parameters and responses (shear strength and ram tensile strength). The fitness of the developed models was validated using the analysis of variance (ANOVA), and confirmation experiments were conducted to verify the precision of the estimated values. The microstructural study revealed that in wire mesh reinforced weld (AZ31B/WM/Al 5052), cracks formed near the joining interface, whereas no such defect was observed in 1%SiCp reinforced weld (AZ31B/WM/1%SiCp/Al 5052). In addition, corrosion analysis revealed that after 120 days of immersion in a marine broth solution, the fabricated silicon carbide-reinforced composite showed no significant degradation (0.039 g/cm2).