[Terminologies] M5 MatSci

Slip

What is the name of the process by which plastic deformation occurs through the motion of dislocations?

Edge dislocation

Which type of dislocation has a dislocation line that is perpendicular to its Burgers vector?

Screw dislocation

Which type of dislocation has a dislocation line that is parallel to its Burgers vector?

Dislocation density

What term represents the total dislocation length per unit volume of a solid material?

Slip system

What is the combination of a preferred crystallographic plane and a preferred direction for dislocation motion?

Critical resolved shear stress

What is the minimum shear stress required to initiate slip on a specific slip system?

Schmid's Law

What principle is defined by the formula $\tau_R = \sigma \cos \phi \cos \lambda$?

Hall-Petch equation

What is the name of the relationship $\sigma_y = \sigma_0 + k_y d^{-1/2}$?

Solid-solution strengthening

Which strengthening mechanism involves adding impurity atoms that impose lattice strains to restrict dislocation motion?

Strain hardening

What is the process where a ductile metal becomes harder and stronger as it is plastically deformed?

Recovery

Which annealing stage involves the relief of internal strain energy and a reduction in dislocation density through atomic diffusion?

Recrystallization

What is the formation of a new set of strain-free, equiaxed grains within a cold-worked material?

Recrystallization temperature

What is the temperature at which recrystallization is just completed in one hour?

Grain growth

What is the process by which the average grain size increases in a polycrystalline material at elevated temperatures?

Burgers vector

What vector denotes the magnitude and direction of the lattice distortion associated with a dislocation?

Lattice strain

What are the atomic compressions or extensions in the crystal lattice surrounding a dislocation line?

Cold working

What is the common term for plastic deformation that is carried out at temperatures much lower than the melting point?

Ductility

Which mechanical property typically decreases as a result of strain hardening or solid-solution strengthening?

Equiaxed grains

What is the term for grains that have approximately the same dimension in all directions?

Annealing

What is the general heat treatment process used to revert the properties of a cold-worked metal to its original state?