mtsci

Front

What are imperfections in real crystals?

Back

Imperfections in real crystals refer to the various types of irregularities in the regular geometrical arrangement of atoms.

Front

What is the effect of grain boundary on dislocation motion?

Back

Grain boundaries act as barriers to dislocation motion, causing slip planes to discontinues or change orientation.

Front

What is strain hardening?

Back

Strain hardening is the process of plastic deformation of ductile materials to increase their strength at temperatures lower than the recrystallization temperature (1/3 - 1/2 of melting temperature).

Front

How can smaller grain sizes be obtained in materials?

Back

Smaller grain sizes can be obtained by cooling the materials faster during casting and heat treatment.

Front

What does the Hall-Petch Equation describe?

Back

The Hall-Petch Equation describes how the strength of a material varies with grain size.

Front

Define 'grain size strengthening'.

Back

Grain size strengthening is a mechanism that increases the strength of a material by reducing its grain size.

Front

What is the recrystallization temperature?

Back

The recrystallization temperature is the temperature at which a deformed material can recover its original structure and properties.

Front

What is the relationship between grain size and material strength?

Back

Generally, smaller grain sizes lead to higher material strength due to increased grain boundary area.

Front

What is the significance of slip planes in materials science?

Back

Slip planes are the planes along which dislocations move, affecting the plastic deformation of materials.

Front

What happens to dislocation motion at grain boundaries?

Back

Dislocation motion is hindered at grain boundaries, which can lead to increased strength in materials.