1 Light Alloy Research Institute, Central South University, Changsha 410083, China 2 Guangxi Liuzhou Yinhai Aluminum Co., Ltd., Liuzhou 545062, Guangxi, China 3 School of Materials Science and Engineering, Central South University, Changsha 410083, China
The flow stress behavior of 5083 aluminum alloy was investigated under hot compression deformation at 523-723K, strain rates of 0.01-10s-1 and true strains of 0-0.7 with Gleeble-3800 thermal simulator. Based on the heat transfer effect on alloy deformation heat effect, the flow stress curves were corrected. The results show that influence of heat conduction can not be neglected and becomes more obvious with the increase of true strain. The corrected flow stress has little influence on the peak stress, but the steady flow stress softening trends to be diminished to some degree. The flow stress can be predicted by the Zener-Hollomon parameters in the constitutive equation. The corrected measured value exhibits a good agreement with the flow stress predicted by the constitutive equation, and the average relative error is only 5.21%.
QI G D , YANG X , SHI X F , et al. The effect of deformation mode on the structure and property of annealed 5083 aluminum alloy[J]. Light Metals, 2010, (9): 70- 72.
2
LIN S P , NIE Z R , HUANG H , et al. Annealing behavior of a modified 5083 aluminum alloy[J]. Materials & Design, 2010, 31 (3): 1607- 1612.
3
LEE Y B , DONG H S , PARK K T , et al. Effect of annealing temperature on microstructures and mechanical properties of a 5083 Al alloy deformed at cryogenic temperature[J]. Scripta Materialia, 2004, 51 (4): 355- 359.
doi: 10.1016/j.scriptamat.2004.02.037
XU Q B , TAO Y R , MI F . Constitutive equation of rheological properties for 5083 aluminum alloy at elevated temperature[J]. Mining and Metallurgy Engineering, 2013, 33 (5): 124- 126.
WU W X , SUN D Q , CAO C Y , et al. Flow stress behavior of 5083 aluminum alloy under hot compression deformation[J]. The Chinese Journal of Nonferrous Metals, 2007, 17 (10): 1667- 1671.
doi: 10.3321/j.issn:1004-0609.2007.10.019
XIA X S , ZHANG W , WANG C P , et al. Correction of hot compression flow stress and hot deformation behavior of rare earth magnesium alloy[J]. Journal of Netshape Forming Engineering, 2013, 5 (4): 1- 6.
XIAO G , LI L X , YE T . Modification of flow stress curves and constitutive equations during hot plane compression deformation of 6013 aluminum alloy[J]. The Chinese Journal of Nonferrous Metals, 2014, 24 (5): 1268- 1274.
8
魏伟. 2198铝锂合金变形行为本构关系研究[D]. 沈阳: 沈阳航空航天大学, 2012.
8
WEI W. Research on constitutive relationship and deformation behavior of 2198 aluminum alloy[D]. Shenyang:Shenyang Aerospace University, 2012.
9
SHEN J , XIE S S . Dynamic recovery and dynamic recrystallization of 7005 aluminum alloy during hot compression[J]. Acta Metallurgica Sinica, 2000, 13 (1): 379- 386.
LIU W Y. Research on mechanical property and microstructure evolution in hot working of 7085 aluminum alloy[D]. Chongqing:Chongqing University, 2014.
11
LI L , ZHOU J , DUSZCZYK J . Determination of a constitutive relationship for AZ31B magnesium alloy and validation through comparison between simulated and real extrusion[J]. Journal of Materials Processing Technology, 2006, 172 (3): 372- 380.
doi: 10.1016/j.jmatprotec.2005.09.021
12
GOELZ R L , SEMIATIN S L . The adiabatic correction factor for deformation beating during the uniaxial compression test[J]. Journal of Materials Engineering and Performance, 2001, 10 (6): 710- 717.
doi: 10.1361/105994901770344593
13
DEVADAS C , BARAGAR D , RUDDLE G , et al. The thermal and metallurgical state of steel strip during hot rolling. Part Ⅱ:factors influencing rolling loads[J]. Metallurgical and Materials Transactions A, 1991, 22 (2): 321- 333.
doi: 10.1007/BF02656801
TAN L Q , WANG G C , GAN W Q , et al. Superplastic constitutive relationship of TA15 titanium alloy based on strain rate circulation method[J]. Journal of Aeronautical Materials, 2014, 34 (6): 21- 27.
doi: 10.11868/j.issn.1005-5053.2014.6.002
LI C L , PAN Q L , LIU X Y , et al. Hot compression deformation and processing maps of 2124 aluminum alloy[J]. Journal of Materials Engineering, 2010, (4): 10- 14.