Acta Metallurgica Sinica (English Letters) ›› 2020, Vol. 33 ›› Issue (6): 871-880.DOI: 10.1007/s40195-020-01041-z

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Fabrication and Characterization of High-Bonding-Strength Al/Ti/Al-Laminated Composites via Cryorolling

Juan Liu1,2,3, Yuze Wu1,2,3, Lin Wang1,2,3, Hui Wang4, Charlie Kong5, Alexander Pesin6, Alexander P. Zhilyaev6, Hailiang Yu1,2,3()   

  1. 1State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, 410083, China
    2College of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China
    3Light Alloys Research Institute, Central South University, Changsha, 410083, China
    4Research Center for Advanced Science and Technology, The University of Tokyo, Meguro, Tokyo, 1530041, Japan
    5Mark Wainwright Analytical Centre, University of New South Wales, Sydney, NSW, 2052, Australia
    6Laboratory of Mechanics of Gradient Nanomaterials, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia, 455000
  • Received:2019-11-03 Revised:2020-01-08 Online:2020-06-10 Published:2020-06-17
  • Contact: Hailiang Yu

Abstract:

Sandwich-like Al/Ti/Al-laminated composites have many advantages such as low density and high specific strength with value in mechanical manufacturing and aerospace engineering. Here, Al/Ti/Al-laminated composites were fabricated by hot roll bonding and subsequent processes: cryorolling (- 190 °C and - 100 °C), cold rolling (25 °C), and hot rolling (300 °C). Their bonding strength and mechanical properties were then studied by an Autograph AGS-X universal electronic testing machine. The results show that cryorolling can improve the interface bonding strength and tensile strength of Al/Ti/Al-laminated composites. For the Al/Ti/Al-laminated composites subjected to cryorolling at - 100 °C, they have the highest strength near 260 MPa—this is 48 MPa and 41 MPa higher than the laminated composites subjected to cold and hot rolling, respectively. These results also show the strongest peeling strength. Finally, the mechanisms of the enhancement of bonding strength and mechanical properties of Al/Ti/Al-laminated composites subjected to cryorolling were mainly discussed.

Key words: Laminated composites, Cryorolling, Bonding strength, Peeling strength, Mechanical property, Bonding mechanism