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Transformation behaviour in thermomechanically processed C-Mn-Si TRIP steels with and without Nb

Journal Article


Abstract


  • Two 0.2wt.% C-1.55wt.% Mn-1.5wt.% Si steels with and without the addition of 0.039 wt.% Nb were studied by laboratory simulations of controlled thermomechanical processing in a quench deformation dilatometer. The microstructures were characterised using optical metallography, image analysis and scanning electron microscopy techniques. The effects of recrystallised and non-recrystallised austenite and discontinuous paths on the final microstructure were studied. The results have shown that the highest volume fraction of retained austenite is associated with a 400°C isothermal bainite transformation temperature and the presence of approximately 50% polygonal ferrite and acicular ferrite as a dominant second phase. © 1999 Elsevier Science S.A.

Publication Date


  • 1999

Citation


  • Pereloma, E. V., Timokhina, I. B., & Hodgson, P. D. (1999). Transformation behaviour in thermomechanically processed C-Mn-Si TRIP steels with and without Nb. Materials Science and Engineering A, 273-275, 448-452. doi:10.1016/S0921-5093(99)00325-1

Scopus Eid


  • 2-s2.0-0033356322

Web Of Science Accession Number


Start Page


  • 448

End Page


  • 452

Volume


  • 273-275

Abstract


  • Two 0.2wt.% C-1.55wt.% Mn-1.5wt.% Si steels with and without the addition of 0.039 wt.% Nb were studied by laboratory simulations of controlled thermomechanical processing in a quench deformation dilatometer. The microstructures were characterised using optical metallography, image analysis and scanning electron microscopy techniques. The effects of recrystallised and non-recrystallised austenite and discontinuous paths on the final microstructure were studied. The results have shown that the highest volume fraction of retained austenite is associated with a 400°C isothermal bainite transformation temperature and the presence of approximately 50% polygonal ferrite and acicular ferrite as a dominant second phase. © 1999 Elsevier Science S.A.

Publication Date


  • 1999

Citation


  • Pereloma, E. V., Timokhina, I. B., & Hodgson, P. D. (1999). Transformation behaviour in thermomechanically processed C-Mn-Si TRIP steels with and without Nb. Materials Science and Engineering A, 273-275, 448-452. doi:10.1016/S0921-5093(99)00325-1

Scopus Eid


  • 2-s2.0-0033356322

Web Of Science Accession Number


Start Page


  • 448

End Page


  • 452

Volume


  • 273-275