Investigation of Microstructural and Mechanical Properties of Tungsten Inert Gas Weld-Cladded Ti-B4C-Fe Layer on AISI 304SS
摘要
In this investigation, the AISI 304 stainless steel (AISI 304SS) was chosen as the substrate material due to its widespread use in various industries, including food processing, automotive, nuclear vessels, aerospace, mining, and marine applications. By enhancing AISI 304SS surface properties, it is possible to lengthen its service life and increase its use in harsh industrial settings (with severe mechanical, tribological, and surface conditions). So, for enhancing the properties of AISI 304SS, applied the composite coating deposition of titanium (Ti), boron carbide (B4C), and iron (Fe), with different ratio of powders by using the tungsten inert gas weld (TIGW cladding) cladding technique. This deposition improves the microstructural and hardness of AISI 304SS, while maintaining a favorable strength-to-weight ratio. Wear testing revealed that the Ti-B4C-Fe-cladded layer exhibited approximately 5.6 times greater wear resistance compared to the substrate material, as evidenced by substantially reduced material loss during dry sliding wear tests. The modified properties of AISI 304SS characterized by scanning electron microscopy (SEM) for microstructure of coating surface, energy-dispersive x-ray spectroscopy (EDS) for element composition analysis, x-ray diffraction (XRD) for phase formation analysis, and surface topography by optical profilometer. Microhardness of the coating has been enhanced by 5.75 times compared to the substrate. The findings of this research endeavor are anticipated to contribute to the advancement of AISI 304SS surface engineering methodologies and facilitate the development of robust and durable materials for diverse industrial applications.