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Microstructure, Texture and Mechanical Properties of Mg-Gd-Y-Zn-Zr Alloy during Repetitive Upsetting-Extrusion after Heat Treatment

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Abstract:

Severe plastic deformation can be produced by repetitive upsetting-extrusion process. Using the repetitive upsetting-extrusion (RUE) process at decreasing temperature, the Mg-12.0Gd-4.5Y-2.0Zn-0.4Zr (wt %) alloy was deformed by different RUE passes and then heat treated. The microstructure, texture and mechanical properties of the alloy were compared and analyzed. The results demonstrate that with the increase of deformation passes, the coarse grains of the alloy decreased, the dynamic recrystallization fraction increased, and the dynamic recrystallized grains phagocytized the original grains. This can promote the continuous refinement of the grains and the microstructure uniformity. The maximum texture intensity of the (0001) basal plane decreased significantly with the increase of processing passes and the dispersion degree of pole figure increased. The orientation of dynamic recrystallized grains was randomly distributed to weaken texture. Due to the refinement of microstructure and the weakening of texture, the tensile strength and yield strength of the alloy obviously increased at room temperature. The mechanical properties of the alloy reached the highest after 3 passes and heat treatment.

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Periodical:

Materials Science Forum (Volume 993)

Pages:

194-202

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.993.194

Citation:

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Online since:

May 2020

Authors:

Ying Ze Meng, Jian Min Yu, Zhi Min Zhang, Yao Jin Wu*, Zheng Shi

Keywords:

Mechanical Properties, Mg-Gd-Y-Zn-Zr Alloy, Microstructure, Repetitive Upsetting-Extrusion, Texture

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* - Corresponding Author

References

[1] S H Kang, Y S Lee, J H Lee. Effect of grain refinement of magnesium alloy AZ31 by severe plastic deformation on material characteristics, J. Mater Process Tech. 201 (2008) 436-440.

DOI: 10.1016/j.jmatprotec.2007.11.305

Google Scholar

[2] H. Sevik, S. Açıkgöz, S.C. Kurnaz. The effect of tin addition on the microstructure and mechanical properties of squeeze cast AM60 alloy, J. Alloys Compd. 508 (2010) 110-114.

DOI: 10.1016/j.jallcom.2010.07.185

Google Scholar

[3] H. Wu, W. Hsu. Tensile flow behavior of fine-grained AZ31B magnesium alloy thin sheet at elevated temperatures, J. Alloys Compd. 493 (2010) 590-594.

DOI: 10.1016/j.jallcom.2009.12.162

Google Scholar

[4] S.Y. Xu, J.Z. Li, H. Ding. The current situation and prospect for magnesium and its alloys by severe plastic deformation, Metal Mater Metall Eng. 4 (2015) 305-310.

Google Scholar

[5] H. Matsunoshita, K. Edalati, M. Furui, et al. Ultrafine-grained magnesium-lithium alloy processed by high-pressure torsion: Low-temperature superplasticity and potential for hydroforming, Mater. Sci. Eng. A. 640 (2015) 443-448.

DOI: 10.1016/j.msea.2015.05.103

Google Scholar

[6] S.M. Masoudpanah, R. Mahmudi. The microstructure, tensile, and shear deformation behavior of an AZ31 magnesium alloy after extrusion and equal channel angular pressing, Mater. Des. 31 (2010) 3512-3517.

DOI: 10.1016/j.matdes.2010.02.018

Google Scholar

[7] J.Q. Tao, Y.S. Cheng, S.D. Huang, et al. Microstructural evolution and mechanical properties of ZK60 magnesium alloy prepared by multi-axial forging during partial remelting, Chin J Nonferrous Met. 22 (2012) s428-s434.

DOI: 10.1016/s1003-6326(12)61742-7

Google Scholar

[8] X. Zhang, G. Yuan, Z. Wang. Mechanical properties and biocorrosion resistance of Mg-Nd-Zn-Zr alloy improved by cyclic extrusion and compression, Mater. Lett. 74 (2012) 128-131.

DOI: 10.1016/j.matlet.2012.01.086

Google Scholar

[9] R.Z. Valiev, I.V. Alexandrov. Nanostructured materials from severe plastic deformation, Progr. Mat. Sci. 45 (2000) 103-189.

DOI: 10.1016/s0079-6425(99)00007-9

Google Scholar

[10] X. Yang, L. Zhang, Y. Jiang, et al. Microtexture evolution in Mg-Y and AZ31 Mg alloy during hot deformation. Chin J Nonferrous Met. 21 (2011) 269-275.

Google Scholar

[11] P. Yang. Electronic backscatter diffraction and its application, second ed, Metallurgical Industry Press, Beijing, 2013. (in Chinese).

Google Scholar

[12] X. Guo, W. Yang, F. Ren, et al. Plastic deformation and strengthening mechanism of Mg alloy. Hot Working Technol. 41 (2012) 7-12.

Google Scholar

[13] L. Zaharia, R. Comaneci, R. Chelariu, et al. A new severe plastic deformation method by repetitive extrusion and upsetting, Mater. Sci. Eng. A. 595 (2014) 135-142.

DOI: 10.1016/j.msea.2013.12.006

Google Scholar

[14] Q. Chen, Z.D. Zhao, Z.X. Zhao, et al. Microstructure development and thixoextrusion of magnesium alloy prepared by repetitive upsetting-extrusion, J. Alloys Compd. 26 (2011) 7303-7315.

DOI: 10.1016/j.jallcom.2011.04.113

Google Scholar

[15] Y. Du. Microstructure evolution of Mg-13Gd-3.5Y-2Zn-0.5Zr alloy fabricated by repetitive upsetting and extrusion, Thesis, North University of China. (2018).

Google Scholar

[16] Y. Du, Z.M, Zhang, G.S. Zhang, et al. Grain refinement and texture evolution of Mg-Gd-Y-Zn-Zr alloy processed by repetitive upsetting-extrusion at decreasing temperature, Rare Metal Mat Eng. 47 (2018) 1422-1428.

DOI: 10.1016/s1875-5372(18)30144-9

Google Scholar

[17] G.S. Zhang, Z.M. Zhang, X.B. Li, et al. Effects of repetitive upsetting-extrusion parameters on microstructure and texture evolution of Mg-Gd-Y-Zn-Zr alloy, J. Alloys Compd. 708 (2019) 48-57.

DOI: 10.1016/j.jallcom.2019.03.207

Google Scholar

[18] D. Hull, D.J. Bacon. Introduction to dislocations, Fourth ed, Butterworth-Heinemann, (2001).

Google Scholar

[19] Y.P. Wu, X.M. Zhang, Y.L. Deng, et al. Effect of compression conditions on the microstructure and texture of a Mg-RE alloy, Mater. Sci. Eng. A. 644 (2015) 152-158.

DOI: 10.1016/j.msea.2015.07.064

Google Scholar

[20] D.K. Xu, L. Liu, Y.B. Xu, et al. Effect of microstructure and texture on the mechanical properties of the as-extruded Mg-Zn-Y-Zr alloys, Mater. Sci. Eng. A. 443 (2007) 248-256.

DOI: 10.1016/j.msea.2006.08.037

Google Scholar

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