Question

The strain hardening exponent n of stainless steel SS 304 with distinct yield and UTS values undergoing plastic deformation is
1. n < 0
2. n = 0
3. 0 < n < 1
4. n = 1

Answer 1

Correct Answer - Option 3 : 0 < n < 1

Explanation:

Formula σ = K εⁿ, where, σ represents the applied stress on the material, ε is the strain, K is the strength coefficient.

The value of the strain hardening exponent lies between 0 and 1.

If n = 0 means that a material is a perfectly plastic

n = 1 means perfectly elastic solid

For stainless steel SS 304 the value of n lies between 0.10 and 0.50.