In the process of studying the basic flow units of amorphous alloys, there are two theoretical models that give me a headache.
1. shear Transformation (ST) model proposed by Argon A S
2. shear transformation zone (STZ) model proposed by Flak M L and Langer J S
Their concepts always confuse me. What are the differences and connections between the two models? I beg for a detailed explanation.
Thank you very much!