Abstract��In this paper, recrystallization terminal temperature Tnr and CCT curves of X80 pipeline steel were measured and analyzed by Gleeble-3800 thermal simulation testing machine, and the range of the phase transition temperature was determined with differential thermal analysis method. The results showed that: the recrystallization terminal temperature is 1 065 ��, Ac1 and Ac3 are 749 �� and 863 ��, a large number of precipitates dissolve when the temperature is 1 050 ��, bainitic transformation temperature is 483 ��, it can be seen that from measured CCT curve:the cooling rate range of formation acicular ferrite is wide. The microstructure is acicular ferrite when the cooling rate is 10-40 ��/s. The conclusions provide the basis to controlled rolling and controlled cooling of X80 pipeline steel.
����Զ���������������棬��ΰ. X80���߸�����ⶨ������о�[J]. �й������ڿ���, 2011, 29(4): 27-31.
WANG Dao-yuan1,LIU Chun-ming1,HUANG Zhen-yi2,WANG Wei2. Measurement and Analysis of Phase Transformation Temperature of X80 Pipeline Steel. Chinese Journal of Iron and Steel, 2011, 29(4): 27-31.
2011, Vol. 29 
