Fabrication and mechanical properties of TiBw/Ti-Ti(Al) laminated composites

In this paper, we designed and prepared TiBw[Ti-Ti(Al) laminated composites consisting of alternating layers of TiBw/Ti and Ti(Al), which were realized by using Al foils and TiBw/Ti composite foils as raw materials, stacking, and reaction annealing. The design strategy of laminated composites contributes to a good combination of low density (4.33 g/cm(3)), high yield strength (722 MPa) and ultimate strength (783 MPa), and elongation to fracture (8.22%) at room temperature (RT). Investigations on strengthening mechanisms of laminated composites show that about 55.7% of strengthening originates from solid solution effect, while laminated structure strengthening occupies 22.0%, and the rest is covered by TiBw reinforcements. (C) 2015 Elsevier Ltd. All rights reserved.