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Zigzag line defect in friction stir butt-weld of ferritic stainless steel
- Source :
- Materials Letters. 288:129361
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
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.
- Subjects :
- Materials science
Impact toughness
Mechanical Engineering
Butt welding
Fracture mechanics
02 engineering and technology
Zigzag line
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
Mechanics of Materials
Ultimate tensile strength
General Materials Science
Composite material
0210 nano-technology
Joint (geology)
Subjects
Details
- ISSN :
- 0167577X
- Volume :
- 288
- Database :
- OpenAIRE
- Journal :
- Materials Letters
- Accession number :
- edsair.doi...........5374c9ebd762614eaa7012bec722f25a