Numerical Simulation and Experimental Verification of Microstructure Evolution during the Seamless Tube Extrusion of Semi-Continuous Casting AZ31 Magnesium Alloy

Abstract:

Based on the stress-strain curves at the temperature of 300-450 °C with strain rate of 0.01-1 s⁻¹ by hot compression tests, the empirical dynamic recrystallization models for the semi-continuous AZ31magnesium alloy were developed. The dynamic recrystallization evolution during the seamless tube extrusion of the AZ31 Mg alloy was simulated by numerical method with the derived models and validated by experiment measurements. The results show that at certain extrusion speed the influence of the extruding temperature on the dynamic recrystallization fraction was significant. With the increase of the extruding temperature the volume fraction of dynamic recrystallization increase obviously. The predicted dynamic recrystallization fraction was in an excellent agreement with the experimental results.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 79-85
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.79
• Online since: June 2017
• Authors: Tao Lin, Ji Xue Zhou*, Bai Chang Ma, Yun Teng Liu, Di Zhang, Yuan Sheng Yang
• Keywords: Dynamic Recrystallization, Numerical Simulation, Seamless Tube Extrusion, Semi-Continuous Casting AZ31 Magnesium Alloy

References

[1] H.E. Friedrich, B.L. Mordike, G.W. Lorimer, Magnesium Technology, second ed., Springer, New York, (2006).

[2] C.J. Wang, F. Han, W.J. Zheng, Z.G. Song, Q.L. Yong, Dynamic recrystallization behavior and microstructure evolution of AISI 304N stainless steel, J. Iron. Steel. Res. Int. 20 (2013) 107-112.

DOI: 10.1016/s1006-706x(13)60185-5

[3] K. Huang, R.E. Logé, A review of dynamic recrystallization phenomena in metallic materials, Mater. Design. 111 (2016) 548-574.

DOI: 10.1016/j.matdes.2016.09.012

[4] S.A. Sani, G.R. Ebrahimi, A.R.K. Rashid, Hot deformation behavior and dynamic recrystallization kinetics of AZ61 and AZ61+Sr magnesium alloys, J. Magnesium. Alloy. 4 (2016) 104-114.

DOI: 10.1016/j.jma.2016.05.001

[5] G.Z. Quan, Y. Shi, Y.X. Wang, B.S. Kang, T.W. Ku, W.J. Song, Constitutive modeling for the dynamic recrystallization evolution of AZ80 magnesium alloy based on stress-strain data, Mat. Sci. Eng. A-Struct. 528 (2011) 8051-8059.

DOI: 10.1016/j.msea.2011.07.064

[6] M. Roostaei, M.H. Parsa, R. Mahmudi, H. Mirzadeh, Hot compression behavior of GZ31 magnesium alloy, J. Alloy. Compd. 631 (2015) 1-6.

DOI: 10.1016/j.jallcom.2014.11.188

[7] K. Suresh, K.P. Rao, Y.V. R. K. Prasad, N. Hort, K.U. Kainer, Effect of calcium addition on the hot working behavior of as-cast AZ31 magnesium alloy, Mat. Sci. Eng. A-Struct. 588 (2013) 272-279.

DOI: 10.1016/j.msea.2013.09.031

[8] Y.J. Qin, Q.L. Pan, Y.B. He, W.B. Li, X.Y. Liu, X. Fan, Modeling of flow stress for magnesium alloy during hot deformation, Mat. Sci. Eng. A-Struct. 527 (2010) 2790-2797.

DOI: 10.1016/j.msea.2010.01.035

[9] S.J. Liang, Z.Y. Liu, E.D. Wang, Simulation of extrusion process of AZ31 magnesium alloy, Mat. Sci. Eng. A-Struct. 499(2009) 221-224.

[10] S. Y. Lee, D. C. Ko, S. K. Lee, M. S. Joeng, D. H. Kim, Y.J. Cho, Porthole extrusion process design for magnesium-alloy bumper back beam by using FE analysis and extrusion limit diagram, Adv. Mech. Eng. 6 (2014) 120745-120745.

DOI: 10.1155/2014/120745

[11] I.K. Lee, S.Y. Lee, S.K. Lee, M.S. Jeong, H.K. Da, J.W. Lee, Y.J. Cho, Porthole extrusion process design for magnesium alloy bumper back beam, Int. J. Precis. Eng. Man. 16 (2015) 1423-1428.

DOI: 10.1007/s12541-015-0187-x

[12] D. Zhang, G. Chen, The numerical simulation for extrusion forming of magnesium alloy pipes, Physics. Procedia. 25 (2012) 125-129.

DOI: 10.1016/j.phpro.2012.03.060

[13] G. Liu, J. Zhou, J. Duszczyk, Process optimization diagram based on FEM simulation for extrusion of AZ31 profile, T. Nonferr. Metal. Soc. 18 (2008) 247-251.

DOI: 10.1016/s1003-6326(10)60211-7

[14] L.X. Li, Y. Lou, Ram speed profile design for isothermal extrusion of AZ31 magnesium alloy by using FEM simulation, T. Nonferr. Metal. Soc. 18(2008) 252-256.

DOI: 10.1016/s1003-6326(10)60212-9

[15] T. Lin, S.H. Zhang, H.W. Song, M. Cheng, J.Q. Sun, M. Cheng, Deformation analysis of hot stamping tools by thermal-fluid-mechanical coupled approach based on MpCCI, Mater. Res. Innov. 18 (2014) 1068-1073.

DOI: 10.1179/1432891714z.000000000822

[16] T. Lin, S.H. Zhang, H.W. Song, M. Cheng, W.J. Liu, Cooling systems design in hot stamping tools by a thermal-fluid-mechanical coupled approach, Adv. Mech. Eng 6 (2015) 545727-545727.

DOI: 10.1155/2014/545727

[17] H.J. Mcqueen, N.D. Ryan, Constitutive analysis in hot working, Mat. Sci. Eng. A-Struct. 322 (2002) 43-63.

[18] B.J. Lv, J. Peng, D.W. Shi, A.T. Tang, F.S. Pan, Constitutive modeling of dynamic recrystallization kinetics and processing maps of Mg-2. 0Zn-0. 3Zr alloy based on true stress-strain curves, Mat. Sci. Eng. A-Struct. 560 (2013) 727-733.

DOI: 10.1016/j.msea.2012.10.025

[19] S.I. Kim, Y.C. Yoo, Dynamic recrystallization behavior of AISI 304 stainless steel, Mat. Sci. Eng. A-Struct. 311 (2001) 108-113.

DOI: 10.1016/s0921-5093(01)00917-0

[20] G. Ji, F. Li, Q. Li, H. Li, Z. Li, Research on the dynamic recrystallization kinetics of Aermet100 steel, Mat. Sci. Eng. A-Struct. 527 (2010) 2350-2355.

DOI: 10.1016/j.msea.2009.12.001

[21] H.Z. Li, H.J. Wang, Z. Li, C.M. Liu, H.T. Liu, Flow behavior and processing map of as-cast Mg-10Gd-4. 8Y- 2Zn- 0. 6Zr alloy, Mat. Sci. Eng. A-Struct. 528 (2010) 154-160.

DOI: 10.1016/j.msea.2010.08.090