Simultaneously enhanced strength-ductility synergy and corrosion resistance in submerged friction stir welded super duplex stainless steel joint via creating ultrafine microstructure

• Published in: Journal of materials processing technology Vol. 307; p. 117660
• Main Authors: Cao, Fujun, Huang, Guoqiang, Hou, Wentao, Ni, Ruiyang, Sun, Tao, Hu, Jinpeng, Shen, Yifu, Gerlich, Adrian P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2022; Elsevier BV
• Subjects: Corrosion resistance; Dual phase steels; Ductility; Duplex stainless steels; Elongation; Friction stir welding; Grain size; Mechanical behavior; Microstructure; Residual stress; Room temperature; Stainless steel; Super duplex stainless steel; Tensile strength; Ultrafine grained microstructure; Ultrafines; Corrosion resistance; Mechanical behavior; Super duplex stainless steel; Friction stir welding; Residual stress; Ultrafine grained microstructure

In this paper, submerged friction stir welding (SFSW), capable of significantly weakening the welding thermal cycle compared to conventional FSW, was employed on SAF2507 super duplex stainless steel (SDSS). An ultrafine grained (UFG) dual-phase microstructure, characterized by more uniformly distrib...