A metallurgical interpretation of the static recrystallization kinetics of an intercritically deformed C-Mn steel

2004 ◽  
Vol 35 (6) ◽  
pp. 1889-1898 ◽  
Author(s):  
Haiwen Luo ◽  
Jilt Sietsma ◽  
Sybrand Van Der Zwaag
2004 ◽  
Vol 467-470 ◽  
pp. 293-298 ◽  
Author(s):  
Haiwen Luo ◽  
Jilt Sietsma ◽  
Sybrand van der Zwaag

The austenite recrystallization kinetics in the intercritical region of a C-Mn steel is investigated by means of stress relaxation tests. It is found that the Avrami exponent, n, decreases significantly with decreasing temperature, i.e. with increasing ferrite fraction. This behaviour deviates from that of austenite recrystallization in the purely austenitic state, in which case the Avrami exponent is constant and independent of temperature and deformation. To interpret this, the influence of spatial variation of the plastic strain in the intercritical austenite grains on recrystallization kinetics is modelled quantitatively. The modelling results seem to indicate that the strain heterogeneity is responsible for the decreasing Avrami exponent with decreasing intercritical temperature.


2016 ◽  
Vol 22 (6) ◽  
pp. 1041-1048 ◽  
Author(s):  
Jong Woo Won ◽  
Taekyung Lee ◽  
Seong-Gu Hong ◽  
Yongmoon Lee ◽  
Jeong Hun Lee ◽  
...  

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