The　main　aim　of　this　work　is　to　explore　and　analyze　the　crack　initiation　and　propagation　in　Ti/Al　composite　laminates　during　the　in-situ　tensile　test.　The　Ti/Al　composite　laminates　were　fabricated　using　explosive　welding　method,　and　the　morphology　and　elemental　distribution　of　the　bonding　interface　were　then　investigated　by　means　of　SEM　and　EDS.　Subsequently,　in-situ　tensile　test　results　showed　that　the　intermetallic　compounds　could　form　at　the　interface　of　Ti/Al　composite　laminates,　and　also　could　easily　induce　the　initiation　of　microcrack　under　tensile　forces.　Furthermore,　the　microcracks　almost　propagated　along　the　45　angle　with　the　tensile　direction　to　Ti　layer　rather　than　Al　layer.　These　features　of　microcracks　mainly　attributed　to　the　hard　and　brittle　phase　(TiAl3)　and　the　plasticity　distinction　between　Ti　and　Al　metals.　Finally,　the　fracture　mechanism　was　mainly　about　the　crack　initiation　and　the　stress　concentration　in　the　Ti/Al　composite　laminates.　(C)　2017　Elsevier　B.V.　All　rights　reserved.