Hot Rolling of Flame Retardant Magnesium and Aluminum Alloys to Produce a Cladding Plate

  • Youngnam Song
  • Jung Seok Kim
  • Sung Hyuk Park
  • Hyung-gyu Kim
  • Chanhee Won
  • Ju-Seong Kim
  • Jonghun Yoon
Regular Paper


In order to facilitate the adoption of bimetallic clad sheets, which are composed of flame retardant Mg and Al alloys, as structural materials in transportation vehicles, the rolling speed, asymmetric roll speed ratio, and thickness of flame retardant Mg sheets have been examined with a roll bonding process at an elevated temperature. As the rolling speed increases, the required reduction ratio to make a full adhesion increases at a rate of the 2nd order to compensate for the insufficient holding time. The asymmetric ratio in the speed of the upper and lower rolls does not substantially influence the cladding integrity between the flame retardant Mg and Al6005 strips. The DRXed grain structure in flame retardant Mg cannot impose substantial contact pressure at the interface during the roll bonding process, which necessitates a high reduction ratio to induce sufficient contact pressure for bonding. The larger DRXed grain structure induced by large plastic deformation in the initial Mg strip is subject to producing a thicker intermetallic layer when the minimum reduction ratio is achieved between the flame retardant Mg and Al6005 alloys. These conclusions are based on EDS line and point analyses at the Mg/Al interface and the results of SEM investigations.


Flame retardant magnesium Al6005 alloy Hot rolling Cladding Intermetallic layer 


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  1. 1.
    Cole, G. S. and Sherman, A. M., “Light Weight Materials for Automotive Applications,” Materials Characterization, Vol. 35, No. 1, pp. 3–9, 1995.CrossRefGoogle Scholar
  2. 2.
    Al-Samman, T. and Gottstein, G., “Room Temperature Formability of a Magnesium AZ31 Alloy: Examining the Role of Texture on the Deformation Mechanisms,” Materials Science and Engineering: A, Vol. 488, Nos. 1-2, pp. 406–414, 2008.CrossRefGoogle Scholar
  3. 3.
    Yoon, J. and Park, S., “Forgeability Test of Extruded Mg-Sn-Al-Zn Alloys under Warm Forming Conditions,” Materials & Design, Vol. 55, pp. 300–308, 2014.CrossRefGoogle Scholar
  4. 4.
    Yoon, J. and Lee, S.-i., “Warm Forging of Magnesium AZ80 Alloy for the Control Arm in an Automobile,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 229, No. 13, pp. 1732–1738, 2015.Google Scholar
  5. 5.
    Yoon, J. and Lee, J., “Process Design of Warm-Forging with Extruded Mg-8Al-0.5 Zn Alloy for Differential Case in Automobile Transmission,” International Journal of Precision Engineering and Manufacturing, Vol. 16, No. 4, pp. 841–846, 2015.CrossRefGoogle Scholar
  6. 6.
    Yoon, J., Cazacu, O., and Mishra, R. K., “Constitutive Modeling of AZ31 Sheet Alloy with Application to Axial Crushing,” Materials Science and Engineering: A, Vol. 565, pp. 203–212, 2013.CrossRefGoogle Scholar
  7. 7.
    Macwan, A., Jiang, X., Li, C., and Chen, D. L., “Effect of Annealing on Interface Microstructures and Tensile Properties of Rolled Al/ Mg/Al Tri-Layer Clad Sheets,” Materials Science and Engineering: A, Vol. 587, pp. 344–351, 2013.CrossRefGoogle Scholar
  8. 8.
    Song, G. L. and Atrens, A., “Corrosion Mechanisms of Magnesium Alloys,” Advanced Engineering Materials, Vol. 1, No. 1, pp. 11–33, 1999.CrossRefGoogle Scholar
  9. 9.
    Lee, J.-K., “Effect of CaO Composition on Oxidation and Burning Behaviors of AM50 Mg Alloy,” Transactions of Nonferrous Metals Society of China, Vol. 21, pp. s23–s27, 2011.CrossRefGoogle Scholar
  10. 10.
    You, B.-S., Park, W.-W., and Chung, I.-S., “The Effect of Calcium Additions on the Oxidation Behavior in Magnesium Alloys,” Scripta Materialia, Vol. 42, No. 11, pp. 1089–1094, 2000.CrossRefGoogle Scholar
  11. 11.
    You, B.-S., Kim, M.-H., Park, W.-W., and Chung, I.-S., “Oxidation Behavior of Molten Magnesium Containing Calcium,” Journal-Korean Institute of Metals and Materials, Vol. 39, No. 4, pp. 446–450, 2001.Google Scholar
  12. 12.
    Yu, H., Tieu, K., Hadi, S., Lu, C., Godbole, A., and Kong, C., “High Strength and Ductility of Ultrathin Laminate Foils Using Accumulative Roll Bonding and Asymmetric Rolling,” Metallurgical and Materials Transactions A, Vol. 46, No. 2, pp. 869–879, 2015.CrossRefGoogle Scholar
  13. 13.
    Kim, I.-K. and Hong, S.I., “Roll-Bonded Tri-Layered Mg/Al/ Stainless Steel Clad Composites and their Deformation and Fracture Behavior,” Metallurgical and Materials Transactions A, Vol. 44, No. 8, pp. 3890–3900, 2013.CrossRefGoogle Scholar
  14. 14.
    Macwan, A., Jiang, X., Li, C., and Chen, D., “Effect of Annealing on Interface Microstructures and Tensile Properties of Rolled Al/ Mg/Al Tri-Layer Clad Sheets,” Materials Science and Engineering: A, Vol. 587, pp. 344–351, 2013.CrossRefGoogle Scholar
  15. 15.
    Zhang, X. P., Castagne, S., Yang, T. H., Gu, C. F., and Wang, J. T., “Entrance Analysis of 7075 Al/Mg-Gd-Y-Zr/7075 Al Laminated Composite Prepared by Hot Rolling and Its Mechanical Properties,” Materials & Design, Vol. 32, No. 3, pp. 1152–1158, 2011.CrossRefGoogle Scholar
  16. 16.
    Bae, J. H., Rao, A. K. P., Kim, K. H., and Kim, N. J., “Cladding of Mg Alloy with Al by Twin-Roll Casting,” Scripta Materialia, Vol. 64, No. 9, pp. 836–839, 2011.CrossRefGoogle Scholar
  17. 17.
    Xie, G., Luo, Z., Wang, G., Li, L., and Wang, G., “Interface Characteristic and Properties of Stainless Steel/HSLA Steel Clad Plate by Vacuum Rolling Cladding,” Materials Transactions, Vol. 52, No. 8, pp. 1709–1712, 2011.CrossRefGoogle Scholar
  18. 18.
    Matsumoto, H., Watanabe, S., and Hanada, S., “Fabrication of Pure Al/Mg-Li Alloy Clad Plate and Its Mechanical Properties,” Journal of Materials Processing Technology, Vol. 169, No. 1, pp. 9–15, 2005.CrossRefGoogle Scholar
  19. 19.
    Luo, C., Liang, W., Chen, Z., Zhang, J., Chi, C., and Yang, F., “Effect of High Temperature Annealing and Subsequent Hot Rolling on Microstructural Evolution at the Bond-Interface of Al/Mg/Al Alloy Laminated Composites,” Materials Characterization, Vol. 84, pp. 34–40, 2013.CrossRefGoogle Scholar
  20. 20.
    Chung, T. Y., Moon, J., and Ha, T. K., “Cladding of Al and Cu by Differential Speed Rolling,” World Academy of Science, Engineering and Technology, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, Vol. 8, No. 2, pp. 102–104, 2014.Google Scholar
  21. 21.
    Li, X., Zu, G., Ding, M., Mu, Y., and Wang, P., “Interfacial Microstructure and Mechanical Properties of Cu/Al Clad Sheet Fabricated by Asymmetrical Roll Bonding and Annealing,” Materials Science and Engineering: A, Vol. 529, pp. 485–491, 2011.CrossRefGoogle Scholar
  22. 22.
    Jamaati, R. and Toroghinejad, M. R., “Investigation of the Parameters of the Cold Roll Bonding (CRB) Process,” Materials Science and Engineering: A, Vol. 527, No. 9, pp. 2320–2326, 2010.CrossRefGoogle Scholar
  23. 23.
    Manesh, H. D. and Taheri, A. K., “Bond Strength and Formability of an Aluminum-Clad Steel Sheet,” Journal of Alloys and Compounds, Vol. 361, Nos. 1-2, pp. 138–143, 2003.CrossRefGoogle Scholar
  24. 24.
    Movahedi, M., Kokabi, A., and Reihani, S. S., “Investigation on the Bond Strength of Al-1100/St-12 Roll Bonded Sheets, Optimization and Characterization,” Materials & Design, Vol. 32, No. 6, pp. 3143–3149, 2011.CrossRefGoogle Scholar
  25. 25.
    Yan, H.-Z., “Key Factors for Warm Rolled Bond of 6111-Aluminium Strip,” Transactions of Nonferrous Metals Society of China, Vol. 16, No. 1, pp. 84–90, 2006.MathSciNetCrossRefGoogle Scholar
  26. 26.
    Hosseini, S., Hosseini, M., and Manesh, H. D., “Bond Strength Evaluation of Roll Bonded Bi-Layer Copper Alloy Strips in Different Rolling Conditions,” Materials & Design, Vol. 32, No. 1, pp. 76–81, 2011.CrossRefGoogle Scholar
  27. 27.
    Yan, Y., Zhang, Z., Shen, W., Wang, J., Zhang, L., and Chin, B., “Microstructure and Properties of Magnesium AZ31B-Aluminum 7075 Explosively Welded Composite Plate,” Materials Science and Engineering: A, Vol. 527, No. 9, pp. 2241–2245,210.Google Scholar
  28. 28.
    Euh, K., Kim, S., Kim, H., Kim, D., and Oh, Y., “Effect of Microstructure Control on the Tensile and Erosion Properties of 3527/4343 Aluminum Clad,” Transactions of Materials Processing, Vol. 22, No. 5, pp. 264–268, 2013.CrossRefGoogle Scholar

Copyright information

© Korean Society for Precision Engineering and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringHanyang UniversityGyeonggi-doRepublic of Korea
  2. 2.New Transportation Systems Research CenterKorea Railroad Research InstituteGyeonggi-doRepublic of Korea
  3. 3.School of Materials Science and EngineeringKyungpook National UniversityDaeguRepublic of Korea
  4. 4.Korea Atomic Energy Research InstituteDaejeonRepublic of Korea

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