Hot-hardening phenomenon in die steel during thermomechanical processing

Hot-hardening phenomenon in die steel during thermomechanical processing

•Hot-hardening phenomenon for a new hot-work steel in the range of 450–750 °C is experimentally shown.•Plastic deformation at 450 °C provides significant hardening of steel.•Plastic deformation at 750 °C further increases the strength of steel. The behavior during hot deformation of a new Si-Cr-Ni-M...

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Veröffentlicht in:Materials letters 2020-05, Vol.266, p.127475, Article 127475
Hauptverfasser: Krugljakow, A.A., Nikulin, S.A., Rogachev, S.O., Nguyen, Hoan Xuan, Lebedeva, N.V., Panova, G.A.
Format: Artikel
Sprache:eng
Schlagworte:
Chromium
Deformation
Die steels
Hot deformation
Hot hardening
Hot-work tool steel
Manganese
Materials science
Microstructure
Nickel
Niobium
Phase transformation
Silicon steels
Stress-strain curves
Thermomechanical properties
Thermomechanical treatment
Titanium
True stress
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Zusammenfassung:•Hot-hardening phenomenon for a new hot-work steel in the range of 450–750 °C is experimentally shown.•Plastic deformation at 450 °C provides significant hardening of steel.•Plastic deformation at 750 °C further increases the strength of steel. The behavior during hot deformation of a new Si-Cr-Ni-Mn-V-Ti-Nb die steel in the temperature range of 450–750 °C was studied. The true stress-strain curves for the steel during hot compressive deformation were plotted. It has been experimentally shown that the steel is prone to hot hardening.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2020.127475