Investigation on the compressive properties of the grahpene reinforced titanium composites

Abstract:

Graphene reinforced titanium composites were prepared by spark plasma sintering at 850℃ following a powder metallurgy process. The compressive properties of the composites at room temperature and 850℃were examined using a Gleeble-1500D. It is found that graphene is well dispersed in titanium matrix, refining the matrix microstructure and improving the compressive strength and hardness of the matrix at the room and high temperatures. In particular, the yield strength at room and temeperature increases by 22.87% and 23.07% respectively; compressive strength increases by 13.91% and 28.57% respectively; hardness increases by 16.4% and 10% respectively. Meanwhile, the result indicates small portion of graphene react with titanium matrix and leads to the formation of titanium carbides and reinforce the matrix. The results presented in this work denmonstrates the graphene/titanium composite is a type of high performance material and can have potential engineering applications.

Key words:graphene, titanium composites, compressive at high temperature