Question

The most favoured slip system in face centered cubic metal is

• A. \( (111) [110] \)
• B. \( (110) [111] \)
• C. \( (111) [112] \)
• D. \( (111) [10\bar{1}] \)

Hint:

In FCC metals, the most favored slip system is \( (111) [10\bar{1}] \), as it has the highest atomic density and allows for easy dislocation motion.

Answer 1

The Correct Option is D

In face-centered cubic (FCC) crystals, the most preferred slip system is the \( (111) \) plane with the \( [10\bar{1}] \) direction. This is because the \( (111) \) plane has the highest atomic density, and the \( [10\bar{1}] \) direction is the most closely packed.

Step 1: Identify the slip system in FCC crystals.
The most common slip system in FCC crystals is the \( (111) \) plane and \( [10\bar{1}] \) direction because it provides the least resistance to dislocation motion, making it the easiest path for plastic deformation.

Step 2: Conclusion.
Thus, the most favored slip system in FCC metals is \( (111) [10\bar{1}] \).

Final Answer: \text{(D) \( (111) [10\bar{1}] \)}