Abstract

Titanium alloy sheets find its broad use in the automotive, biomedical, and aerospace industries. One of the most demanding role of these sheets is in making of Ti/GFRP based stacked composites. Production of Titanium laminates for this application is difficult and expensive than other metals due to the challenges of multipass processing with intermediate annealing. In the present research work, ultrafine titanium laminates are fabricated through novel technique based on large strain extrusion machining in a single pass. Laminates were produced from Ti-6Al-4V and pure titanium (CP-Ti). Metallurgical characterization through SEM/XRD/EBSD analysis is performed to check the effects of different parameters on laminates properties. Mechanical testing is performed using vicker’s hardness tester. It is evident from the analysis that the hardness of laminates is increased by 25–52% as compared to the base materials. Changes in crystallite structure of the material with severe plastic deformation may have led to an increase in hardness of laminates. Scanning electron microscopy is used to see the topography of the surface, and roughness is measured using a roughness tester. Deformation in different laminates was analysed through X-ray diffraction. Electron backscatter diffraction (EBSD) was done on the sample to find the crystallographic information of the microstructure of laminates fabricated by large strain extrusion machining.

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