Hot Roll Bonding of Aluminum to Twin-Roll Cast (TRC) Magnesium and Its Subsequent Deformation Behavior

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Abstract

In an experiment in which twin-roll cast AZ31 magnesium alloy and commercial purity aluminum (AA 1050) sheets were bonded by hot rolling as Al/Mg/Al laminate composites, it was found that increasing the preheating temperatures up to 400 °C enhances the bonding strength of composites. Further increases in the preheating temperatures accelerate the magnesium oxide growth and thus reduce the bonding strength. The influence of the reduction ratio on the bonding properties was also studied, whereby it was observed that increasing the rolling reduction led to an increase in the bonding strength. The experimental results show that the optimum bonding strength can be obtained at rolling temperatures of 375-400 °C with a 50-60% reduction in thickness. On the other hand, the subsequent deformation behavior of composite was assessed using plane strain compression and deep drawing tests. We demonstrate that the composites produced using the optimum roll bonding conditions exhibited sufficient bonding during subsequent deformation and did not reveal any debonding at the bonding interface.

Keywords

roll bonding bonding strength Al/Mg joining twin-roll cast AZ31 

Notes

Acknowledgment

The authors are grateful to the Institute of Metal Forming, TU Bergakademie Freiberg, Freiberg, Germany. The financial support within the fellowship program funded by German Academic Exchange Service (DAAD) grant code number: A/09/97507, under the direction of Desk 445, is gratefully acknowledged. We would like to thank ADDE “Structure Design of Novel High Performance Materials via Atomic Design and Defect Engineering” for their support.

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Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.Institute of Metal FormingTU Bergakademie FreibergFreibergGermany

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