Skip to main content
placeholder image

Effect of large particles and fine precipitates on recrystallization and transformation behaviour of Ti treated low carbon TiO steel

Journal Article


Abstract


  • Austenite recrystallization and ferrite transformation behaviour of a Ti treated low carbon TiO steel was studied by uniaxial hot compression in a temperature range of 780 to 1300°C. The results have been compared to that of a conventional TiN steel. It was found that large oxide particles present in TiO steel have shown ability to stimulate recrystallization nucleation and transformation during deformation but failed to accelerate recrystallization of bulk material because of an insufficient volume fraction of these large particles in the steel. The influence of Ti : N ratio in TiO steel is critical to TiN precipitation behaviour which affects microstructural development during thermomechanical processing. TiN precipitates in TiO steel are coarser in comparison to conventional Ti microalloyed steel thus reducing grain boundary pinning effects. It was also found that recrystallization of ferrite in cold worked TiO and TiN steels was not affected significantly by large particles and fine precipitates but controlled by pearlite size and distribution.

UOW Authors


Publication Date


  • 1996

Citation


  • Yu, D., Barbaro, F. J., Chandra, T., & Dunne, D. P. (1996). Effect of large particles and fine precipitates on recrystallization and transformation behaviour of Ti treated low carbon TiO steel. ISIJ International, 36(8), 1055-1062. doi:10.2355/isijinternational.36.1055

Scopus Eid


  • 2-s2.0-0030358274

Web Of Science Accession Number


Start Page


  • 1055

End Page


  • 1062

Volume


  • 36

Issue


  • 8

Abstract


  • Austenite recrystallization and ferrite transformation behaviour of a Ti treated low carbon TiO steel was studied by uniaxial hot compression in a temperature range of 780 to 1300°C. The results have been compared to that of a conventional TiN steel. It was found that large oxide particles present in TiO steel have shown ability to stimulate recrystallization nucleation and transformation during deformation but failed to accelerate recrystallization of bulk material because of an insufficient volume fraction of these large particles in the steel. The influence of Ti : N ratio in TiO steel is critical to TiN precipitation behaviour which affects microstructural development during thermomechanical processing. TiN precipitates in TiO steel are coarser in comparison to conventional Ti microalloyed steel thus reducing grain boundary pinning effects. It was also found that recrystallization of ferrite in cold worked TiO and TiN steels was not affected significantly by large particles and fine precipitates but controlled by pearlite size and distribution.

UOW Authors


Publication Date


  • 1996

Citation


  • Yu, D., Barbaro, F. J., Chandra, T., & Dunne, D. P. (1996). Effect of large particles and fine precipitates on recrystallization and transformation behaviour of Ti treated low carbon TiO steel. ISIJ International, 36(8), 1055-1062. doi:10.2355/isijinternational.36.1055

Scopus Eid


  • 2-s2.0-0030358274

Web Of Science Accession Number


Start Page


  • 1055

End Page


  • 1062

Volume


  • 36

Issue


  • 8