Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.1716.1721ChenYuanfang XuHongbin JiangHuade GuanGuohua 1020131310The hot compression experiments were carried out on Gleeble-1500D thermal simulator
system and the hot deformation performance of non-quenched and tempered steel
49MnVS3 between 950°C∼1200°C with strain rate of 0.1~10 sec-1
were investigated by processing maps of dynamic material model. The deformation
zone where dynamic recovery and dynamic recrystallization occurred is obtained
according to true stress-strain curve. The variation law of strain rate sensitive
factor m and power dissipation η is analyzed. Based on the analysis on m,η
and instability criterion ,
the instability zone with strain of 0.3 and 0.5 is analyzed by contrastive analysis
method. It is found that the hot processing safety zone of this metal accords
to each other. Taking the deformation parameters when dynamic recrystallization
happened in hot processing safety zone as deformation conditions, the optimal
processing safety zones of this alloy are determined to be 2~10 sec-1
for strain rate and 1150~1200°C for processing temperature.]]>Chen, Y.B., W. Ma and K. Jin,20012516Tang, X.M., J.Y. Chen, J.G. Zhao and H.Z. Ao,200114547Prasad, Y.V.R.K. and K.P. Rao,2008487316327Prasad, Y.V.R.K. and K.P. Rao,2005○C.]]>391141150Prasad, Y.V.R.K., H.L. Gegel, S.M. Doraivelu, J.C. Malas, J.T. Morgan, K.A. Lark and D.R. Barker,19841518831892Ganesan, G., K. Raghukandan, R. Karthikeyan and B.C. Pai,2005p through neural networks.]]>166423429Meng, G., B.L. Li, H.M. Li, H. Huang and Z. Nie,2009517132137Ziegler, H.,1983Zheng, Q.G., Y. Wang and Y.W. Zhang,20114223012306Momeni, A. and K. Dehghani,201052754675473Kim, H.Y., H.C. Kwon, H.W. Lee, Y.T. Im, S.M. Byon and H.D. Park,20082057080Tan, C.W., S.N. Xu, L. Wang, Z.Y. Chen, F.C. Wang and H,N. Cai,2007174145Bozzini, B. and E. Cerri,2002328344347Cavaliere, P.,20022247252Gronostajski, Z.,2002125-126119124