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Zigzag line defect in friction stir butt-weld of ferritic stainless steel

Journal Article


Abstract


  • A zigzag line defect was detected in the stir zone (SZ) of friction stir butt-welded 12% Cr ferritic stainless steel joint. The characteristics and formation cause of the zigzag line defect was clarified and analyzed. The zigzag line defect presented the partly bonded feature but with relatively higher hardness, which did not affect the tensile properties at room temperature of the joint. The micro-void features of the zigzag line defect were considered to promote crack propagation under impact load, thereby significantly reducing the impact toughness of the SZ.

Publication Date


  • 2021

Citation


  • Tang, W., Yang, X., Li, S., & Li, H. (2021). Zigzag line defect in friction stir butt-weld of ferritic stainless steel. Materials Letters, 288. doi:10.1016/j.matlet.2021.129361

Scopus Eid


  • 2-s2.0-85099959590

Volume


  • 288

Issue


Place Of Publication


Abstract


  • A zigzag line defect was detected in the stir zone (SZ) of friction stir butt-welded 12% Cr ferritic stainless steel joint. The characteristics and formation cause of the zigzag line defect was clarified and analyzed. The zigzag line defect presented the partly bonded feature but with relatively higher hardness, which did not affect the tensile properties at room temperature of the joint. The micro-void features of the zigzag line defect were considered to promote crack propagation under impact load, thereby significantly reducing the impact toughness of the SZ.

Publication Date


  • 2021

Citation


  • Tang, W., Yang, X., Li, S., & Li, H. (2021). Zigzag line defect in friction stir butt-weld of ferritic stainless steel. Materials Letters, 288. doi:10.1016/j.matlet.2021.129361

Scopus Eid


  • 2-s2.0-85099959590

Volume


  • 288

Issue


Place Of Publication