The formation of jogs in screw dislocations _________ its motion. Jogs in edge dislocations _________ its motion.

do not restrict, do not restrict

A zinc crystal is strained to point A, unloaded, and then reloaded in the direction opposite to the original slip direction:What is the reason for the drop in shear stress when loaded in the opposite direction?

Increase in the number of slip system

Which of the following is not a source of dislocation multiplication?

Emission from high angle grain boundary

11 + Mcqs in Plastic Deformation of Single Crystal Deformation by Twinning in Mechanical Metallurgy Page 1 McqOptions

Explore topic-wise MCQs in Mechanical Metallurgy.

What is the resolved shear stress, when dislocation density in metal is equal to 10¹²m^-2? Given that shear stress needed in the absence of dislocation is 500MPa. Numerical constant is 0.3 and shear modulus is 80GPa, burger vector is 1 nm.

Strain hardening due to ___________ process arises from short range force occurring over a distance of 5 to 10 atomic distance. This hardening can be overcome at finite temperatures with the help of thermal fluctuations, and therefore, it is temperature and strain-rate-dependent.

The formation of jogs in screw dislocations _ its motion. Jogs in edge dislocations _ its motion.

Cross slip can occur in both the edge dislocation as well as in screw dislocation.

The interaction of dislocation does not result in ______________

Which of the following phenomena is responsible for the formation of sessile dislocation?

The dislocation of low mobility that is produced by a dislocation reaction is called a ______ dislocation.

A zinc crystal is strained to point A, unloaded, and then reloaded in the direction opposite to the original slip direction:
What is the reason for the drop in shear stress when loaded in the opposite direction?

Which of the following is not a source of dislocation multiplication?

Inhomogeneous deformation of crystal results in regions of different orientation called deformation bands. Deformation bands have been observed in both fcc and bcc metals, but not in hcp metals.

Among the given metal, which has the highest stacking fault energy?

Explore topic-wise MCQs in Mechanical Metallurgy.

What is the resolved shear stress, when dislocation density in metal is equal to 1012m-2? Given that shear stress needed in the absence of dislocation is 500MPa. Numerical constant is 0.3 and shear modulus is 80GPa, burger vector is 1 nm.

Strain hardening due to ___________ process arises from short range force occurring over a distance of 5 to 10 atomic distance. This hardening can be overcome at finite temperatures with the help of thermal fluctuations, and therefore, it is temperature and strain-rate-dependent.

The formation of jogs in screw dislocations _________ its motion. Jogs in edge dislocations _________ its motion.

Cross slip can occur in both the edge dislocation as well as in screw dislocation.

The interaction of dislocation does not result in ______________

Which of the following phenomena is responsible for the formation of sessile dislocation?

The dislocation of low mobility that is produced by a dislocation reaction is called a ______ dislocation.

A zinc crystal is strained to point A, unloaded, and then reloaded in the direction opposite to the original slip direction:What is the reason for the drop in shear stress when loaded in the opposite direction?

Which of the following is not a source of dislocation multiplication?

Inhomogeneous deformation of crystal results in regions of different orientation called deformation bands. Deformation bands have been observed in both fcc and bcc metals, but not in hcp metals.

Among the given metal, which has the highest stacking fault energy?

What is the resolved shear stress, when dislocation density in metal is equal to 10¹²m^-2? Given that shear stress needed in the absence of dislocation is 500MPa. Numerical constant is 0.3 and shear modulus is 80GPa, burger vector is 1 nm.

The formation of jogs in screw dislocations _ its motion. Jogs in edge dislocations _ its motion.

A zinc crystal is strained to point A, unloaded, and then reloaded in the direction opposite to the original slip direction:
What is the reason for the drop in shear stress when loaded in the opposite direction?