Transactions of Materials and Heat Treatment

Title：Hot deformation behavior and dynamic recrystallization diagram for low-alloy Q345E steel at high temperature

Authors： LI Jia ZHANG Xiu-zhi LIU Jian-sheng

Unit： Taiyuan University of Science and Technology

KeyWords： Q345E thermal simulation test constitutive equation dynamic recrystallization state

ClassificationCode：TG316

year,vol(issue):pagenumber：2013,38(4):148-151

Abstract：

The single-pass compression experimental investigation on the high strength low alloy (HLSA) Q345E steel was carried out using thermal-mechanical testing machines Gleeble-1500D at high temperature. The deformation resistance of Q345E steel under different parameters, such as temperature, strain rate and strain was measured, and the influences of different deformation parameters on the dynamic recrystallization and deformation resistance were analyzed also. It is shown that the flow stress of Q345E steel grows significantly with the increasing of strain rate and decreasing of deformation temperature. When the tests are carried out under low strain rate at higher temperature, there will be dynamic recrystallization. However, there will be no dynamic recrystallization under high strain rate at lower test temperature. Based on the test results, the dynamic recrystallization diangram and the plastic constitutive equation of Q345E steel during hot deformation are established, which provide theoretic basis for the scientific design and effective controlling the forming procedure of the steel.

Funds：

太原市科技资助项目(120224)

李佳(1986-), 男, 硕士研究生

Reference：

［1］张毅峰，王雷刚，吴君三，等. 大直径风塔法兰异型环锻件双件合轧工艺模拟与试验[J]. 热加工工艺, 2010,39(19):89-93. Zhang Y F, Wang L G, Wu J S,et al. Simulation and test on rolling pairs of large-diameter wind-tower flange with special sectional rings[J]. Hot Working Technology，2010,39(19):89-93.
［2］王建锋，邓深，饶江平,等. 钛微合金化Q345E钢的试验研究[J]. 钢铁钒钛,2010,31(2):20-25. Wang J F, Deng S, Rao J P,et al. Experimental study on the TiM icroalloyed Q345E steel[J]. Iron Steel Vanadium t Itanium, 2010,31(2):20-25.
［3］Sellars C M, McTegart W J. On the mechanism of hot deformation[J]. Acta Metall.1996(14):1136-1138.
［4］Hee Y, Kim A, Soon H, et al. High temperature deformation behavior and microstructural evolution of Ti-47Al-2Cr-4Nb intermetallic alloys[J]. Scripta Materialia,1998,38(10):1517-1523.
［5］McQueen H J, Ryan N D. Constitutive analysis in hot working[J]. Materials Science and Engineering, 2002,322(1-2):43-63.
［6］梁海成, 崔建忠. AZ80 镁合金高温热变形流变应力研究[J].锻压技术，2009,32（2）：113-116. Liang H C,Cui J Z.Study on flow stress of AZ80 magnesium alloy during hot compression deformation at elevated temperatures[J]. Forging & Stamping Technology, 2009,32（2）：113-116.
［7］Zener C, Hollomon H. Effect of strain-rate upon theplastic flow of steel[J]. Applied Physics, 1994,15(1):22-32.
［8］钱利锋，侯英玮. U75V 钢流动应力的试验研究[J]. 锻压技术，2009,34（5）：132-135. Qian L F,Hou Y W. Experimental research on flow stress of U75V steel[J]. Forging & Stamping Technology, 2009,34（5）：132-135.
［9］司家勇，韩鹏彪，张继. Ti46.5Al 2.5V1.0Cr.0.3Ni合金高温锻造本构模型研究[J]. 锻压技术，2009,34（5）：121-125. Si J Y,Han P B,Zhang J. Study on high-temperature constitutive relationship of Ti-46.5Al-2.5V-1.0Cr-0.3Ni alloy[J]. Foring & Stamping Technology, 2009,34（5）:121-125.
［10］徐洲，孟繁盛，门学勇，等. 用金相方法制作热变形奥氏体再结晶图[J]. 金属热处理学报，1984,5(1)：76-81. Xu Z,Meng H S,Men X Y, et al. Determination of recrystallization diagram of hot deformed austinte by metallographic method[J]. Transactions of Metal Heat Treatment, 1984,5(1)：76-81.
［11］黄杰，徐洲，邢新. 微合金钢热变形奥氏体再结晶图及Y 参数的应用[J]. 热加工工艺，2003,（3）:12-13. Huang J, Xu Z,Xing X. Recrystallization diagrams of hot deformed austenite for micro-alloyed steel and application of parameter Y[J]. Hot Working Technology, 2003,（3）:12-13.
［12］陈振湘,许晓嫦,王斌,等. T91钢的高温塑性变形及动态再结晶行为[J].北京科技大学学报，2012,34(3):298-304. Chen Z X, Xu X C, Wang B, et al. Plastic deformation and dynamic recrystallization of T91 steel at high temperature[J]. Journal of University of Science and Technology Beijing, 2012,34 (3):298-304.

Service：

【This site has not yet opened Download Service】【Add Favorite】