Creep properties of TiC/Al7075 composites prepared by coupling process of FSP and heat treatment

In this work, composites of TiC and 7075 aluminum alloy are prepared by friction stir processing coupled with heat treatment to improve the material properties and tested for creep performance. Experimental results showed that the composites displayed a low creep rate and a high creep life after the coupling treatment. The TiC particles exhibited good interfacial bonding coherence in the matrix, and the creep mechanism is changed from the viscous sliding of dislocations to the grain boundary sliding creep control mechanism.

Automated summary

Composites of TiC and 7075 aluminum alloy were prepared by friction stir processing and heat treatment to improve material properties and tested for creep performance. The composites exhibited low creep rate and high creep life after the coupling treatment. The TiC particles showed good interfacial bonding coherence in the matrix, and the creep mechanism changed from viscous sliding of dislocations to grain boundary sliding creep control mechanism.