Mechanical properties of Ti-6Al-4V three-layer material

Accepted: 10 December 2021
Citation: A.A. Sarkeeva. Mechanical properties of Ti-6Al-4V three-layer material. Lett. Mater., 2021, 11(4s) 571-574


Mechanical properties of Ti-6Al-4V three-layer materialThe paper presents the results of studies on the mechanical behavior under impact and tensile loading of a Ti-6Al-4V three-layer material obtained by diffusion bonding at 800°C. Diffusion bonding is the process that integrates one material with another by pressure at a temperature below the melting points of materials. Diffusion bonding of Ti-6Al-4V alloy is particularly interesting for aerospace structures, ballistic armor and sports equipment manufacturing. Predominantly single spherical pores are present in the joint zone; chains of pores are extremely rare. The static mechanical properties of the laminate are at the level of properties of monolithic material. The laminate is characterized by a different fracture resistance depending on the layer orientation relative to the direction of impact load action. The impact strength value of the laminate is minimum in the crack short-transverse orientation due to the lower energy of crack propagation. The energy of crack nucleation in the studied laminate is the same for all studied orientations of crack propagation. The results of the evaluation of the relative value of the impact strength showed that the laminate has the highest fracture resistance for the crack divider orientation. The studied layer orientations relative to the direction of impact load action are characteristic for the real diffusion-bonded structures.

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