Abstract
The hot ductility of resulfurized low-carbon free-cutting steel with boron additives is studied in the temperature range 850 – 1200°C with the help of a Gleeble-1500 thermomechanical simulator. The introduction of boron increases hot ductility, especially at 900 – 1050°C. In the single-phase austenitic region, this effect is caused by segregation of boron over grain boundaries, acceleration of dynamic recrystallization, and solid-solution softening of deformed austenite.
Published Version
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