The true statement is c. The work hardening rate is a material property that describes the optimum rate of elongation to efficiently produce dislocations.

Here's why:

a. This is not true because the modulus of a material (its ability to resist deformation) is not directly affected by the number of dislocations. Instead, dislocations can move and multiply under stress, leading to plastic deformation.

b. This is not true because work hardening, also known as strain hardening, actually makes materials stronger and more ductile, not more brittle. It does this by increasing the number of dislocations and other defects in the crystal structure of the material, which hinder the movement of other dislocations.

d. This is not true because dislocations of the same type can indeed repel each other, but dislocations of opposite types can attract each other and cancel out, relieving some of the stress in the material.

Question

The true statement is c. The work hardening rate is a material property that describes the optimum rate of elongation to efficiently produce dislocations.

Here's why:

a. This is not true because the modulus of a material (its ability to resist deformation) is not directly affected by the number of dislocations. Instead, dislocations can move and multiply under stress, leading to plastic deformation.

b. This is not true because work hardening, also known as strain hardening, actually makes materials stronger and more ductile, not more brittle. It does this by increasing the number of dislocations and other defects in the crystal structure of the material, which hinder the movement of other dislocations.

d. This is not true because dislocations of the same type can indeed repel each other, but dislocations of opposite types can attract each other and cancel out, relieving some of the stress in the material.

Knowee AI · Accepted Answer

The true statement is c. The work hardening rate is a material property that describes the optimum rate of elongation to efficiently produce dislocations.

Here's why:

a. This is not true because the modulus of a material (its ability to resist deformation) is not directly affected by the number of dislocations. Instead, dislocations can move and multiply under stress, leading to plastic deformation.

b. This is not true because work hardening, also known as strain hardening, actually makes materials stronger and more ductile, not more brittle. It does this by increasing the number of dislocations and other defects in the crystal structure of the material, which hinder the movement of other dislocations.

d. This is not true because dislocations of the same type can indeed repel each other, but dislocations of opposite types can attract each other and cancel out, relieving some of the stress in the material.

Question

Solution

Similar Questions

Upgrade your grade with Knowee