Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 9 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.

Metals with wide stacking faults (low SFE) strain-harden more rapidly, twin easily on annealing, and shows a different temperature dependence of flow stress than metals with narrow stacking faults.

A. True
B. False
Answer» B. False
Discussion
2.

The _______ the stacking-fault energy, the higher the separation between the partial dislocations and the ________ the stacking fault.

A. lower, wider
B. higher, wider
C. lower, narrow
D. higher, narrow
Answer» B. higher, wider
Discussion
3.

Which of the following represents the extrinsic stacking fault in the FCC Metal?

A. ABCABCABC
B. ABCBCABC
C. ABCACBCABC
D. ABABABABA
Answer» D. ABABABABA
Discussion
4.

The stacking fault in FCC will create a thin region of ___________ in stacking of the FCC.

A. HCP
B. BCC
C. SC
D. DC
Answer» B. BCC
Discussion
5.

The stacking sequence of the atomic arrangement for HCP is ___________

A. ABCABCABC
B. ABABABABA
C. AABBAABBAA
D. AAAAAAAAA
Answer» C. AABBAABBAA
Discussion
6.

The stacking sequence of the atomic arrangement for FCC is ___________

A. ABCABCABC
B. ABABABABA
C. AABBAABBAA
D. AAAAAAAAA
Answer» B. ABABABABA
Discussion
7.

Which of the following is not matching correctly?
Metal > Twin Plane > Twin Direction

A. alpha iron > (112) >[111]
B. Silver -> (111) >[112]
C. Copper -> (111) >[112]
D. Zinc > (112) >[111]
Answer» E.
Discussion
8.

Twinning is not associated with specific crystallographic direction; it only depends on the direction of mechanical force. There is no preferred orientation of twinning in crystal.

A. True
B. False
Answer» C.
Discussion
9.

Tin cry phenomena is associated with ______________

A. twin
B. slip
C. annealing
D. oxidation
Answer» B. slip
Discussion