Mechanical Behavior of Deep-Drawn Cups with Aluminum/Duralumin Multi-Layered Clad Structures

This study aims to investigate mechanical behavior of deep-drawn cups consisting of aluminum (A1050)/ duralumin (A2017) multi-layered clad structures with micro- and macro-scale functional gradients. Such multi-layered clad structures are possibly used for a new type of crash-boxes in automobiles to effectively absorb the impact forces generated when automobiles having collisions. The effect of heat treatments on microstructure, compositional gradient, micro hardness in 2 and 6-layered aluminum/ duralumin clad structures, which were fabricated by hot rolling, have been investigated. Impact compressive behavior of deep-drawn cups consisting of such aluminum/ duralumin clad structures has been also investigated in terms of energy absorption and maximum force. Deep-drawn cups consisting of 6-layerd clad structures with microand macro-scale functional gradients exhibit superior properties in impact compressive tests.

Authors:

• Hideaki Tsukamoto
• Yoshiki Komiya
• Hisashi Sato
• Yoshimi Watanabe

Keywords:

• Crash box
• functionally graded material (FGM)
• Impact compressive property
• Multi-layered clad structure.

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