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| ���Ͻ���ȱ�����Ϊ |
REN An-chao, JI Yu, ZHOU Gui-feng, et al |
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Abstract The expansion curves of continuous cooling transformation at different cooling rates was determined for U75V rail steel by THERMECMASTOR- Z thermal simulator��and continuous cooling transformation curve was obtained.The influedce of cooling rate on microstructure and hardness was studied.On the other hand��the softening behavior of isothermal deforming at austenite area 850��1000�� within interval of passes has been also studied by double-pass compression test.The results show that the product of austenite transformation was pearlite when the cooling rate was lower than 10��.Troostite and martensite were gained at the cooling rate of 10��•s-1. Only martensite was received when the cooling rate was in the range of 10�� 50��•s-1.the hardness of steel increased with the increase of cooling rate.Results also indicated that 30% deformation and 3S-1 deforming rate��as deformation temperature ��1000�棬relaxation time for performing recrystallization was��100s��and as deformation temperature��880 �棬it was difficult even extending relaxation time to put forward recrystallization of steel.
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Received: 31 May 2009
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| [1] |
Peng Zhou,,Qing-xian Ma,,*. Static recrystallization behavior of 25CrMo4 mirror plate steel during two-pass hot deformation[J]. Chinese Journal of Iron and Steel, 2017, 24(2): 222-228. |
| [2] |
Zheng CHEN,,Qi��jie ZHAI,Jie��yu ZHANG,Hong��gang ZHONG. Effects of Thermal Gradients and Rotational Flows on Grain Growth in 22 t Steel Ingots[J]. Chinese Journal of Iron and Steel, 2016, 23(9): 973-980. |
| [3] |
Gh MOHAMMED,,S. EI-GAMAL,. Effects of ��-irradiation and Deformation Temperature on Tensile Properties of Pb-2 mass% Sb Alloy[J]. Chinese Journal of Iron and Steel, 2016, 23(7): 733-738. |
| [4] |
Ding-qian DONG,,Fei CHEN,Zhen-shan CUI. Static Recrystallization Behavior of SA508-III Steel during Hot Deformation[J]. Chinese Journal of Iron and Steel, 2016, 23(5): 466-474. |
| [5] |
Wei WU, Bing NI, Zhuang-zhuang LIU, Yong YANG. Theoretical Study and Thermal Simulation of Titanium Removal in Combined Blown Converters[J]. Chinese Journal of Iron and Steel, 2015, 22(Supplement 1): 57-62. |
| [6] |
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2010, Vol. 17 
