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<p>This study's main goal is to investigate how standard duplex stainless steel 2205's mechanical and corrosion characteristics are impacted by cryogenic, cold, and warm rolling reductions. Achieved thickness reductions were 0–45%. Initially, all the specimens were solution annealed at 1100&#xa0;°C for 30 minutes, followed by water quenching before cryo, cold, and warm rolling reductions. All the rolled specimens exhibited variations in anodic potentiodynamic polarization parameters. Post-rolling reductions, tensile tests were performed. X-ray diffraction, field emission scanning electron microscopy, and electron backscattered diffraction were also used to assess deformed microstructures. A notable increase in yield strength (YS) was observed due to imposed rolling. The greatest YS at 1185&#xa0;MPa was observed in the 45% cold-rolled specimens when compared to their warm (1040&#xa0;MPa) and cryo-rolled (995&#xa0;MPa) counterparts. However, ultimate tensile strength remained almost the same for 45% specimens for all rolling conditions. Total elongation (TL) and uniform elongation (UL) of the solution-annealed specimen were highest, exhibiting 60 and 35%, respectively. The subsequent gradual rolling reductions deteriorated both TL and UL considerably. Cryo-rolled specimens exhibited ductility at 15% reduction, while warm-rolled specimens exhibited least ductility as early as 7% reduction. Further, post-tensile test, the fracture surfaces were examined. Transition of ductile to brittle fractures was observed in 45% cold- and 10% warm-rolled specimens. Cleavage-type fracture was not observed in any of the cryo-rolled specimens.</p>

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Effects of Cryogenic, Cold, and Warm Rolling Reductions on the Evolution of Mechanical and Corrosion Properties of Standard Duplex Stainless Steel 2205

  • 期刊论文

  • 发表日期：

    2025年8月6日

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  • R. Vinothkumar,
  • N. Srinivasan

摘要

This study's main goal is to investigate how standard duplex stainless steel 2205's mechanical and corrosion characteristics are impacted by cryogenic, cold, and warm rolling reductions. Achieved thickness reductions were 0–45%. Initially, all the specimens were solution annealed at 1100 °C for 30 minutes, followed by water quenching before cryo, cold, and warm rolling reductions. All the rolled specimens exhibited variations in anodic potentiodynamic polarization parameters. Post-rolling reductions, tensile tests were performed. X-ray diffraction, field emission scanning electron microscopy, and electron backscattered diffraction were also used to assess deformed microstructures. A notable increase in yield strength (YS) was observed due to imposed rolling. The greatest YS at 1185 MPa was observed in the 45% cold-rolled specimens when compared to their warm (1040 MPa) and cryo-rolled (995 MPa) counterparts. However, ultimate tensile strength remained almost the same for 45% specimens for all rolling conditions. Total elongation (TL) and uniform elongation (UL) of the solution-annealed specimen were highest, exhibiting 60 and 35%, respectively. The subsequent gradual rolling reductions deteriorated both TL and UL considerably. Cryo-rolled specimens exhibited ductility at 15% reduction, while warm-rolled specimens exhibited least ductility as early as 7% reduction. Further, post-tensile test, the fracture surfaces were examined. Transition of ductile to brittle fractures was observed in 45% cold- and 10% warm-rolled specimens. Cleavage-type fracture was not observed in any of the cryo-rolled specimens.