PULSED WAVE ND:YAG LASER WELDING OF UNS S32750 SUPER DUPLEX STAINLESS STEEL
Keywords:
Super Duplex Stainless Steel, Pulsed Wave Laser Welding, Microstructure, Mechanical strengthAbstract
This paper presents the microstructural and mechanical behavior of Nd:Yag laser welded super duplex stainless steel employed in chemical and petrochemical industries. Microstructural investigation was conducted using optical and scanning electron microscopies to confirm the presence of large ferrite grain with intra and inter-granular austenite. Ferrite content studies on the weld zone indicate no significant element partitioning between austenite and ferrite phases. Mechanical testing viz., Tensile strength and microhardness, were determined as per relevant standards and the results are presented.
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References
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