Question 1

Work hardening also called as

Accepted Answer

Work hardening is also known as strain hardening. It refers to the process where a metal's strength and hardness are increased by plastic deformation.

Question 2

some materials can not be work hardened at normal ambient temp. such as …….. Material.

Accepted Answer

Indium is a material that cannot be work-hardened at normal ambient temperatures due to its low melting point and high ductility. Work hardening, or strain hardening, typically involves deforming a metal to increase its strength. However, metals like indium, which are very soft and ductile, do not respond to work hardening in the same way harder metals do at room temperature.

Question 3

In solid solution strengthening to ……the hardness of material.

Accepted Answer

Solid solution strengthening increases the hardness of a material by introducing solute atoms into the base metal's crystal lattice, which disrupts the lattice and makes dislocation movement more difficult, thereby increasing the material's hardness.

Question 4

The number of solute atoms is more……will be the local distortion in the lattice.

Accepted Answer

The more solute atoms present, the greater the local distortion in the lattice, as these atoms can disrupt the regular arrangement of atoms or ions in the crystal lattice, leading to distortions.

Question 5

The press of finely distributed …….particles increases the elastic limit.

Accepted Answer

The press of finely distributed hard particles increases the elastic limit by hindering the movement of dislocations within the material, thus enhancing its strength and elasticity.

Quiz 3: Heat Treatment Processes and Hardening Techniques for Metals and Alloys

Work hardening also called as

some materials can not be work hardened at normal ambient temp. such as …….. Material.

In solid solution strengthening to ……the hardness of material.

The number of solute atoms is more……will be the local distortion in the lattice.

The press of finely distributed …….particles increases the elastic limit.