Interfacial Peel Strength and Microstructure of Titanium/Aluminium Foil Manufactured by Ultrasonic Consolidation Process
An experimental investigation was performed on the ultrasonic consolidation of bi-metallic foil materials, 1100 aluminium and TA1 titanium. The layer-metal composite laminate specimens were prepared using the ultrasonic consolidated Ti/Al foilto investigate effects of amplitude and static force on the interface bonding strength of Ti/Al foil by peel test. In addition, the microstructure morphology observation and energy spectrum analysis of the peeled interfaces were performed using SEM and EDS respectively. The results showed that a good bonding interface of Ti/Al foil was obtained using the ultrasonic consolidation technique. The interface bonding strength increased first then decreased with increasing the static force, while increasing monotonically with increasing the amplitude. The optimum ultrasonic consolidated interface with a peeling strength 11.325 N/mm could be obtained using an amplitude 35 μm and static force 2.0 kN. A uniform distribution of Al element was found in the peeled interface of Ti foil accompanying with the obvious nest microstructure, which further certificated the good interface quality using ultrasonic consolidation process.
KeywordsUltrasonic consolidation Peel strength Mechanical property
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