Effect of Thermal Deformation Regimes on the Austenite Growth Kinetics and Recrystallization of Medium Carbon Low-Alloyed Steel for Large-Sized Steam Turbine Rotors

Abstract

Effect of thermal deformation regimes on the austenite grain growth is studied in the article. The austenite grain growth curve based on the experimental data is constructed. Conclusion about temperature, deformation degree and rate effect is made.


 


 


Keywords: deformation, recrystallization, dynamic recrystallization, medium-carbon low-alloyed steel.

References
[1] Lei X. Hot deformation behavior of medium carbon V-N microalloyed steel, Trans. Nonferrous Met. Soc. China. 2009. V. 19. pp. 1389-1394.


[2] Kim S. Modeling of AGS and recrystallized fraction of microalloyed medium carbon steel during hot deformation, Mater. Sci. Eng. A. 2003. V. 355. pp. 384-393.


[3] Mirzadeh H. Hot deformation behavior of a medium carbon microalloyed steel, Mater. Sci. Eng. A. 2011. V. 28. pp. 3876-3882.


[4] in Y.C. Effects of temperatures on stress/strain distribution and microstructural evolution of deformed 42CrMo steel, Mater. Des. 2009. V. 30. pp. 908-913.


[5] Meysami M. Study on the behavior of medium carbon vanadium microalloyed steel by hot compression test, Mater. Sci. Eng. A. 2011. V. 28 pp. 3049- 3055.


[6] Momeni K. Hot working behavior of 2205 austenite–ferrite duplex stainless steel characterized by constitutive equations and processing maps,Mater. Sci. Eng. A. 2011. V. 528. P. 1448-1454.


[7] Prasad Y.V.R.K. Hot Working Guide: A Compendium of Processing Map, ASM International, Materials Park, OH.: 1997. pp. 545


[8] Gorelik S.S. Recrystallization metals and alloys, Moscow, 1978