Final answer:
The expected slip system for the simple cubic crystal structure is <100>{111}.
Step-by-step explanation:
A slip system refers to the specific crystallographic orientation and direction in which a crystal can undergo plastic deformation or slip. In a simple cubic crystal structure, the <100> direction represents the crystallographic direction, and {111} represents the crystallographic plane.
When stress is applied along the <100> direction, the crystal can slip along the {111} plane, resulting in plastic deformation. This slip system is important for understanding the mechanical properties and behavior of simple cubic crystals.