Anisotropic deformation behavior during cup drawing at room temperature of a ZX10 magnesium alloy sheet

Anisotropic deformation behavior during cup drawing at room temperature of a ZX10 magnesium alloy sheet

HAMA Takayuki, HIGUCHI Koichi, NAKATA Yuto

Abstract. Magnesium (Mg) alloy sheets have low density and high specific strength; thus, they are expected to facilitate weight reduction of structural components. However, because of the strong crystal anisotropy of the hexagonal structure and the strong basal texture observed in typical rolled Mg alloy sheets, their press formability at room temperature is low. To improve the room-temperature press formability, ZX series Mg alloy sheets that weakened the basal texture have recently been developed. The plastic deformation behavior of a rolled Mg-1.5mass%Zn-0.1mass%Ca (ZX10Mg) alloy sheet was studied in a previous study [7], and it was reported that the plastic deformation behavior showed strong in-plane anisotropy and differed notably from that of AZ series rolled Mg alloy sheets. In the present study, cylindrical cup drawing of a ZX10Mg alloy sheet was performed at room temperature and the drawability was examined in terms of cup height distributions, strain evolution, and texture evolution. The cup height differed significantly between the rolling and transverse directions. The thickness at the cup edge was the largest in the rolling direction and the smallest in the transverse direction. The magnitude relationship of the thickness correlated with the Lankford values under compression. The mechanism that yielded the difference in texture evolution was also discussed.

Keywords
Magnesium Alloy, Room-Temperature Cup Drawing, Twinning, Lankford Value, Thickness Strain

Published online 4/19/2023, 6 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: HAMA Takayuki, HIGUCHI Koichi, NAKATA Yuto, Anisotropic deformation behavior during cup drawing at room temperature of a ZX10 magnesium alloy sheet, Materials Research Proceedings, Vol. 28, pp 711-716, 2023

DOI: https://doi.org/10.21741/9781644902479-77

The article was published as article 77 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] A.I. Taub, A.A. Luo, Advanced lightweight materials and manufacturing processes for automotive applications, MRS Bull. 40 (2015) 1045-1053. https://doi.org/10.1557/mrs.2015.268
[2] F.-K. Chen, T.-B. Huang, C.-K. Chang, Deep drawing of square cups with magnesium alloy AZ31 sheets, Int. J. Mach. Tools Manuf. 43 (2003) 1553-1559. https://doi.org/10.1016/S0890-6955(03)00198-6
[3] E. Doege, K. Dröder, Sheet metal forming of magnesium wrought alloys — formability and process technology, J. Mater. Process. Technol. 115 (2001) 14-19. https://doi.org/10.1016/S0924-0136(01)00760-9
[4] Y. Chino, X. Huang, K. Suzuki, M. Mabuchi, Enhancement of stretch formability at room temperature by addition of Ca in Mg-Zn alloy, Mater. Trans. 51 (2010) 818-821. http://doi.org/10.2320/matertrans.M2009385
[5] Y. Chino, T. Ueda, Y. Otomatsu, K. Sassa, X. Huang, K. Suzuki, M. Mabuchi, Effects of Ca on tensile properties and stretch formability at room temperature in Mg-Zn and Mg-Al alloys, Mater. Trans. 52 (2011) 1477-1482. http://doi.org/10.2320/matertrans.M2011048
[6] Y. Chino, K. Sassa, X. Huang, K. Suzuki, M. Mabuchi, Effects of Zinc concentration on the stretch formability at room temperature of the rolled Mg-Zn-Ca alloys, J. Japan Inst. Metals 75 (2011) 35-41. (in Japanese)
[7] T. Hama, K. Higuchi, H. Yoshida, Y. Jono, Work-hardening behavior of a ZX10 Magnesium alloy sheet under monotonic and reverse loadings, Key Eng. Mater. 926 (2022) 926-932. https://doi.org/10.4028/p-7bgcsj
[8] T. Nakata, T. Hama, K. Sugaya, S. Kamado, Understanding room-temperature deformation behavior in a dilute Mg-1.52Zn-0.09Ca (mass%) alloy sheet with weak basal texture, Mater. Sci. Eng. A 852 (2022) 143638. https://doi.org/10.1016/j.msea.2022.143638
[9] T. Hama, K. Hirano, R. Matsuura, Cylindrical cup drawing of a commercially pure titanium sheet: experiment and crystal plasticity finite-element simulation, Int. J. Mater. Form. 15 (2022) 8. https://doi.org/10.1007/s12289-022-01655-x
[10] T. Hama, Y. Tanaka, M. Uratani, H. Takuda, Deformation behavior upon two-step loading in a magnesium alloy sheet, Int. J. Plast. 82 (2016) 283-304.
[11] T. Hama, T. Suzuki, S. Hatakeyama, H. Fujimoto, H. Takuda, Role of twinning on the stress and strain behaviors during reverse loading in rolled magnesium alloy sheets, Mater. Sci. Eng. A 725 (2018) 8-18. http://doi.org/10.1016/j.msea.2018.03.124
[12] D Steglich, X. Tian, J. Bohlen, T. Kuwabara, Mechanical testing of thin sheet Magnesium alloys in biaxial tension and uniaxial compression, Exp. Mech. 54 (2014) 1247-1258. https://doi.org/10.1007/s11340-014-9892-0