Abstract:The present study investigates the metallurgical behavior of direct-drive friction-welded (DDFW) joints for high Cr, Ni, and Mo steel (AISI 316). Macro-microscopic, microhardness, and X-ray diffraction (XRD) were conducted. The results for the macroscopic view showed that the narrow welding center did not exceed 600 µm and there were no macro cracks or defects, indicating a uniform structure. The microstructure exhibited a significant welded joint interface with microcavities and a grain refinement of 10 µm, a… Show more
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