Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.

The most common form to express the flow curve is:σ=KεnHere σ=stress, ε=strain, n=strain hardening exponent, and K is defined as stress when ε = _______

A. 1
B. 0.5
C. 0
D. 0.33
Answer» B. 0.5
Discussion
2.

If the specimen is deformed plastically beyond the yield stress in one direction, e.g., tension and then after unloading it is loaded in the opposite direction, e.g., compression, it is found that the yield stress is less than the original yield stress. This dependence of yield stress on direction loading is called ____________

A. bauschinger effect
B. strain hardening
C. residual stress
D. nabarro–herring effect
Answer» B. strain hardening
Discussion
3.

In the stress-strain curve, loading and unloading of the material in the plastic region follow the same path.

A. True
B. False
Answer» C.
Discussion
4.

In the stress-strain curve, loading and unloading of the material in the elastic region follow the same path.

A. True
B. False
Answer» B. False
Discussion
5.

The following flow curve shows the deformation behavior of the material in the plastic region. The material is deformed till ε1 and released; the material immediately reached to strain ε2. And the time strain reached to ε3. So, there is a delayed recovery of strain. This is behavior of material is called _________

A. recoverable elastic strain
B. delayed elastic strain
C. anelastic behavior
D. plastic strain
Answer» D. plastic strain
Discussion
6.

The following flow curve shows the deformation behavior of the material in the plastic region. The material is deformed till ε1 and released; the material immediately reached to strain ε2. So, there is an instantaneous recovery of strain. This is called _________

A. recoverable elastic strain
B. delayed elastic strain
C. snelastic behavior
D. plastic strain
Answer» B. delayed elastic strain
Discussion