Optimization of SAF 2507 Joints Formed Using Microwave Energy Technique
摘要
This study explores the optimized assembly of SAF 2507 similar joints by microwave hybrid heating (MHH). The impact of input factors like number of graphite rods (R), type of filler powder (P), and process time (T) on crucial mechanical properties like microhardness (H) and tensile strength (TS) is investigated. Mechanical properties of joined specimens are conducted by using Vickers hardness and tensile strength investigations. The outcomes are used to determine the optimal input parameters for achieving the best joint mechanical properties. Filler material emerges as major dominated factor, followed by number of graphite rods. Process time, however, shows only slight impact on output factors within the narrow 60 s incremental range considered in this study. Experimental findings reveal that the optimal microhardness (H) of 478.2 HV and tensile strength (TS) of 509.61 MPa found. The higher microhardness observed in the weld area is attributed to the dense metallic microstructure throughout the welding area as evidenced by physical characterization test results. The x-ray diffraction (XRD) spectrum discloses the formation of various carbides, intermetallic compounds, and oxides within the weld area.