Effect of powder composition, PTAW parameters on dilution, microstructure and hardness of Ni–Cr–Si–B alloy deposition: Experimental investigation and prediction using machine learning technique

• DOI: 10.1016/j.heliyon.2024.e36087
• Publication Date: 2024-08-14T00:24:17Z
• Authors: Venkatesh Chenrayan; Kiran Shahapurkar; Chandru Manivannan; L. Rajeshkumar; N. Sivakumar; R. Rajesh sharma; R. Venkatesan
• Keywords: Dilution; Deposition

The implementation of hard-facing alloy on the existing materials caters need for high-performance surfaces in terms wear and high temperatures. present research explore effect Plasma Transferred Arc Welding (PTAW) parameters powder composition dilution, microstructure hardness commonly used Ni-Cr-Si-B powder. was deposited with three weight proportions boron (2.5 %, 3 % 3.5 %). statistical-based Grey Relational Analysis (GRA) followed by a Machine Learning Algorithm (MLA) implemented to identify ideal degree significance each parameter prediction responses. dilution percentage, analysis, phase detection were estimated through elemental Scanning electron Microscopy (SEM) X-ray Diffraction (XRD) respectively. experimental modelling results revealed that 400 mm/min scanning speed, 8 gm/min delivery, 14 mm stand-off distance, 120 A current optimal along wt% yield better hardness.