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The use of magnesium sheet in automotive light-weighting initiatives is low due to its poor formability at room temperature. In this investigation the cast ZEK100 (Mg-1.2Zn-0.35Zr-0.17Nd, in wt%) alloy was subjected to rolling at temperatures from 350 to 450 °C and for each rolling temperature the evolution of microstructure and tensile properties were assessed. To assess strengthening during rolling, properties were also measured after annealing following each rolling. The results show that increasing the rolling temperature caused reduction of tensile strength, yield stress but increasing elongation. A correlation was established between mechanical properties and grain size influenced by the rolling temperature. The results are discussed in terms of the role the rare earth elements play in controlling the formability of magnesium alloys.
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F. Czerwinski: Magnesium Alloys - Design, Processing and Properties, Magnesium Sheet; Challenges and Opportunities, InTech, January 14, 2011, p. 297.
N. Stanford, “Micro-alloying Mg with Y, Ce, Gd and La for texture modification-A comparative study” Materials Science Engineering A 527 (2010) 2669–2677.
Joseph D. Robson,” Effect of Rare-Earth Additions on the Texture of Wrought Magnesium Alloys: The Role of Grain Boundary Segregation”, Metallurgical and Materials Transactions A, Volume 45A, July 2014, pp. 3205–3212.
A. Zilberov et al,” High Temperature Behaviour of a New Mg-Ca-Zn Alloy”, Proceedings of the 6th International Conference on Magnesium Alloys and Their Applications, 2006, pp. 134–140.
B. Langelier, P. Donnadieu, and S. Esmaeili, “Characterization of Precipitation in Mg-Zn-Ce-(Ca) Alloys”, Mg2012: 9th International Conference on Magnesium Alloys and their Applications, July 2012, pp. 485–491.
M. Boba, M. J. Worswick, and R. Mishra, “Formability of AZ31B and ZEK100 Magnesium Alloy Sheets,” Proceedings of 9th International conference on magnesium alloys and their applications, Vancouver, Canada, 2012.
N. Panahi, M. Worswick, and T. Skszek, “Determination of warm forming limit diagram for ZEK100,” in NUMISHEET 2014: The 9th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes: Part A Benchmark Problems and Results and Part B General Papers, 2013, pp. 366–369.
Yan, J.; Sun, Y.; Xue, F.; Xue, S.; Tao, W. Microstructure and mechanical properties in cast magnesium–neodymium binary alloys. Mater. Sci. Eng. A 2008, 476, 366–371.
Chia, T.L.; Easton, M.A.; Zhu, S.M.; Gibson, M.A.; Birbilis, N.; Nie, J.F. The effect of alloy composition on the microstructure and tensile properties of binary Mg-rare earth alloys. Intermetallics 2009, 17, 481–490.
Magnesium and Magnesium Alloys, ASM Specialty Handbook, ASM International, September 1999.
Magnesium Technology: Metallurgy, Design Data, Applications, edited by Horst E. Friedrich, Barry L. Mordike, 1999.
A. A. Luo, R. K. Mishra, and A.K. Sachdev,” High-Ductility Magnesium-Zinc-Cerium Extrusion Alloys”, Scripta Materialia, 64 (2011), pp. 410–413.
R. K. Mishra et al,” Influence of Cerium on Texture and Ductility of Magnesium Extrusions, Scripta Materialia, 59 (2008), pp. 562–565.
M.G. Jiang et al,” Microstructure and Mechanical Properties of an Extruded Mg-1.58Zn-0.52Gd Alloy, Magnesium Technology 2017, p 299.
Sung Hyuk Park, Bong Sun You, Raja K. Mishra, Anil K. Sachdev,” Effects of extrusion parameters on the microstructure and mechanical properties of Mg–Zn–(Mn)–Ce/Gd alloys” Materials Science & Engineering, A598 (2014) 396–406.
E.F. Emley, Principles of Magnesium Technology, Pergamon Press, Oxford, 1966.
G.E. Dieter, Mechanical Metallurgy, McGraw-Hill Book Company, New York, 1976.
- Evolution of Microstructure and Mechanical Properties During Casting and Rolling of the ZEK100 Sheet
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