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Constitutive Modeling of 7075 Aluminum Alloy under the Hot Compression Condition | ||
| Iranian Journal of Materials Forming | ||
| دوره 8، شماره 2، تیر 2021، صفحه 54-63 اصل مقاله (1.53 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijmf.2021.39380.1171 | ||
| نویسندگان | ||
| Sajad Rasaee* ؛ AmirHossein Mirzaei | ||
| Department of Mechanical Engineering, Faculty of Engineering, Kermanshah University of Technology, Kermanshah, Iran | ||
| چکیده | ||
| The behavior of Al7075 during the hot compression in a wide range of temperatures, 623-773 K, and strain rates, 0.001-1 s-1, were investigated in this paper. Moreover, using the standard Arrhenius constitutive models, a mathematical equation was proposed for predicting the flow stress, and then the accuracy of the model was examined using standard verification methods. The increasing of temperature and strain rate, respectively, have a reverse and direct effect on the flow stress, which can be expressed using the Zener-Hollomon parameter with the activation energy of 304 kJ/mol. Since the potential dependence of the constants in the model has not been considered for any parameter, the accuracy of the standard model is low. It was found that the values of these constants depend on the strain, so for each of the constants, a relation was obtained in terms of strain to express this relation properly. The modified model not only precisely predicts the flow stress but also provides higher accuracy in predicting the trend of variation of stress due to the influence of metallurgical evolutions occurring during the process of hot deformation, such as dynamic recrystallization or softening and hardening. | ||
| کلیدواژهها | ||
| hot deformation؛ constitutive equation؛ Arrhenius model؛ deformation activation energy؛ Strain compensated | ||
| مراجع | ||
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[1] Y. Deng, Z. Yin, J. Huang, Hot deformation behavior and microstructural evolution of homogenized 7050 aluminum alloy during compression at elevated temperature, Materials Science and Engineering: A, 528 (2011) 1780-1786.
[2] Y.C. Lin, L.-T. Li, Y.-X. Fu, Y.-Q. Jiang, Hot compressive deformation behavior of 7075 Al alloy under elevated temperature, Journal of Materials Science, 47 (2012) 1306-1318.
[3] M.R. Rokni, A. Zarei-Hanzaki, A.A. Roostaei, A. Abolhasani, Constitutive base analysis of a 7075 aluminum alloy during hot compression testing, Materials & Design, 32 (2011) 4955-4960.
[4] N. Jin, H. Zhang, Y. Han, W. Wu, J. Chen, Hot deformation behavior of 7150 aluminum alloy during compression at elevated temperature, Materials Characterization, 60 (2009) 530-536.
[5] M.-l. Wang, P.-p. Jin, J.-h. Wang, L. Han, Hot deformation behavior of as-quenched 7005 aluminum alloy, Transactions of Nonferrous Metals Society of China, 24 (2014) 2796-2804.
[6] R. Bobbili, B. Ramakrishna, V. Madhu, A. Gogia, Prediction of flow stress of 7017 aluminium alloy under high strain rate compression at elevated temperatures, Defence Technology, 11 (2015) 93-98.
[7] L. Chen, G. Zhao, J. Yu, W. Zhang, Constitutive analysis of homogenized 7005 aluminum alloy at evaluated temperature for extrusion process, Materials & Design (1980-2015), 66 (2015) 129-136.
[8] Q. Zang, H. Yu, Y.-S. Lee, M.-S. Kim, H.-W. Kim, Effects of initial microstructure on hot deformation behavior of Al-7.9Zn-2.7Mg-2.0Cu (wt%) alloy, Materials Characterization, 151 (2019) 404-413.
[9] Q. Zang, H. Yu, Y.-S. Lee, M.-S. Kim, H.-W. Kim, Hot deformation behavior and microstructure evolution of annealed Al-7.9Zn-2.7Mg-2.0Cu (wt%) alloy, Journal of Alloys and Compounds, 763 (2018) 25-33.
[10] W. Liu, H. Zhao, D. Li, Z. Zhang, G. Huang, Q. Liu, Hot deformation behavior of AA7085 aluminum alloy during isothermal compression at elevated temperature, Materials Science and Engineering: A, 596 (2014) 176-182.
[11] M. Rajamuthamilselvan, S. Ramanathan, Hot deformation behaviour of 7075 alloy, Journal of Alloys and Compounds, 509 (2011) 948-952.
[12] B. Ke, L. Ye, J. Tang, Y. Zhang, S. Liu, H. Lin, Y. Dong, X. Liu, Hot deformation behavior and 3D processing maps of AA7020 aluminum alloy, Journal of Alloys and Compounds, 845 (2020) 156113.
[13] G.R. Johnson, W.H. Cook, A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates, and High Temperatures, 7th International Symposium on Ballistics, The Hague, Netherlands, 1983, pp. 541-547.
[14] A.I.H. Committee, ASM handbook: Heat treating, ASM International1991.
[15] A. Chamanfar, M. Jahazi, J. Gholipour, P. Wanjara, S. Yue, Evolution of flow stress and microstructure during isothermal compression of Waspaloy, Materials Science and Engineering: A, 615 (2014) 497-510.
[16] C.M. Sellars, W. McTegart, On the mechanism of hot deformation, Acta Metallurgica, 14 (1966) 1136-1138.
[17] W. Li, H. Li, Z. Wang, Z. Zheng, Constitutive equations for high temperature flow stress prediction of Al–14Cu–7Ce alloy, Materials Science and Engineering: A, 528 (2011) 4098-4103.
[18] L. Chen, G. Zhao, J. Yu, Hot deformation behavior and constitutive modeling of homogenized 6026 aluminum alloy, Materials & Design, 74 (2015) 25-35.
[19] Y.C. Lin, Y.-C. Xia, X.-M. Chen, M.-S. Chen, Constitutive descriptions for hot compressed 2124-T851 aluminum alloy over a wide range of temperature and strain rate, Computational Materials Science, 50 (2010) 227-233.
[20] Y.Y. Zong, D.B. Shan, Z. Shi, Study on hot deformation behaviour and constitutive equation of 4032 Al alloy, Materials Research Innovations, 15 (2011) s470-s474.
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