Crack Propagation simulation for a binary alloy

Dear altruists,
I am trying to recreate the Crack propagation simulation for a binary alloy system (B2 phase Co-Ti alloy). Every example code I’ve looked into only uses one type of molecule so I need to see an example of how one can recreate the fracture propagation using a binary alloy. I would greatly benefit and take this as a learning experience if anyone could show me how to integrate an alloy in the Crack example code.

Thank you.
Amin Haque
Bangladesh University of Engineering and Technology