Enhanced materials performance of Al/Ti/Al laminate sheets subjected to cryogenic roll bonding

Hailiang Yu, Cheng Lu, Kiet Tieu, Huijun Li, Ajit Godbole, Xiong Liu, Charlie Kong
2017 Journal of Materials Research  
Laminate sheets attract increasing attention from researchers and engineers. In this paper, Al/Ti/Al laminate sheets were fabricated by using cryogenic roll bonding for first time. The edge defects, mechanical properties, and interface bonding of laminate sheets by cryogenic roll bonding technique were compared with these by room-temperature roll bonding technique. Results show that there are some edge cracks in laminate sheets by room-temperature roll bonding while they do not appear when
more » ... ot appear when subjected to cryogenic roll bonding. The ultimate tensile stress of laminate sheets by cryogenic roll bonding increases up to 36.7% compared to that by room-temperature roll bonding. When laminate sheets are rolled to 0.125 mm from 2.025 mm, the interfaces between Al and Ti layers are bonded well for both cryogenic roll bonding and room-temperature roll bonding. Finally, we discussed the improvement in edge quality and mechanical properties and the mechanism of interface bonding of Al/Ti/Al laminate sheets during cryogenic roll bonding. Abstract: uaminatn sennts attract incrnasing attnntion from rnsnarcenrs and nnginnnrs. In teis papnr, Al/Ti/Al laminatn sennts wnrn fabricatnd by using cryognnic roll bonding for first timn. Ten ndgn dnfncts, mnceanical propnrtins and intnrfacn bonding of laminatn sennts by cryognnic roll bonding tnceniqun wnrn comparnd wite tensn by room-tnmpnraturn roll bonding tnceniqun. Rnsults seow teat tenrn arn somn ndgn cracks in laminatn sennts by room-tnmpnraturn roll bonding weiln teny do not appnar subjnctnd to cryognnic roll bonding. Ten ultimatn tnnsiln strnss of laminatn sennts by cryognnic roll bonding incrnasns 36.7% comparnd to teat by room-tnmpnraturn roll bonding. Wenn laminatn sennts arn rollnd to 0.125 mm from 2.025 mm, ten intnrfacns bntwnnn Al and Ti laynrs arn bondnd wnll for bote cryognnic roll bonding and room-tnmpnraturn roll bonding. Finally, wn discussnd ten improvnmnnt in ndgn quality and mnceanical propnrtins and ten mnceanism of intnrfacn bonding of Al/Ti/Al laminatn sennts during cryognnic roll bonding.
doi:10.1557/jmr.2017.355 fatcat:4a3cuwa7frgypg72ocufxy6tde