CHARACTERIZATION AND ANALYSIS OF HARDNESS, MICROSTRUCTURE, AND CRYSTALLOGRAPHY OF SS 304-SHEATHED MgB2 SUPERCONDUCTING WIRES

This research was conducted to analyze the hardness, microstructural morphology, and crystallography of MgB2 compound in form a SS 304-sheathed superconducting wire. wire with 304 outer sheath manufactured using an ex-situ rolling process. The results Vickers hardness test load 0.3 N showed value 355.1 HV. observations SEM-EDS (scanning electron microscopy-energy dispersive spectroscopy) agglomerations second phase (Mg)B-O various compositions due There also longitudinal crack area work-hardening phenomenon brittle solid. were no obvious Bragg peaks phase. detected came from austenitic (g-Fe) 304-sheath.