二相超二重鋼の塑性変形の特徴

Key Points

• The aim is to determine the ductility characteristics of superduplex steel under various conditions.
• Conducted compression, tension, and torsion experiments using Gleeble 3800 system.
• Tested specimens at temperatures ranging from 1050°C to 1250°C.
• Constructed ductility diagrams based on temperature and stress effects.
• Maximum ductility was observed at temperatures of 1200–1250°C.
• Heating before deformation significantly enhances ductility.
• Data facilitated the development of technology for hot-pressed pipes in Russia.