Iranian Journal of Materials Science and Engineering

• Optimization of SLM process parameters ensures the production of high-quality, mechanically robust maraging 300 alloy parts.
• Optimal energy density minimizes porosity and unmelted particles, resulting in improved density and strength.
• Heat treatment significantly enhances tensile strength through solution and aging processes.
• The stripe scanning strategy improves tensile strength and reduces porosity compared to alternative strategies.

 

• Synthesis of CuS nanoparticles (NPs) via wet chemical approach, with nanometer-scale dimensions. Comprehensive characterization revealing hexagonal phase structure confirmed by X-ray diffraction (XRD) and Raman spectroscopy.
• Estimated bandgap energy of 2.05 eV for slightly sulfur-rich CuS NPs, indicating miniaturization effect exhibited Exceptional photocatalytic activity of CuS NPs in degrading methyl Red (MR) under visible light.
• Surface-bound OH ions on CuS nanostructures enhance adsorption and acceleration of MR degradation under visible light. Significant promise and efficiency of CuS NPs highlighted as photocatalysts, particularly for purifying chemically contaminated wastewater.
• High responsiveness to stable visible light makes CuS NPs suitable for practical applications, especially in degrading stable azo dyes like MR.

 

AZ91 Mg alloy samples processed with 2 passes of ECAP (ECAP-2P) have relatively higher wear resistance than the as-received AZ91 Mg alloy
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Coefficient of friction of ECAP-2P sample was less than that of as-received Mg alloy because of strain hardening during sliding.
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wear morphology study indicates that the wear mechanisms include abrasion, delamination, plastic deformation, and oxidation
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The corrosion resistance of the ECAE-2P and ECAE-4P samples increased by 76.53% and 71.11%, respectively