Heat Treatment

Which of the following is the hardest constituent of steel?

• Ledeburite

• Austenite

• Bainite

• Martensite

For steel, which one of the following properties can be enhanced upon annealing?

• Hardness

• Toughness

• Ductility

• Resilience

In Annealing, cooling is done in which of the following medium?

• Air

• Water

• Oil

• Furnace

In normalizing, cooling is done in which of the following medium?

• Air

• Water

• Oil

• Furnace

Mild steel can be converted into high carbons steel by which of the following heat treatment process?

• Annealing

• Normalizing

• Case hardening

• Nitriding

Upon annealing, eutectoid steel converts to which of the following?

• Perlite

• Cementite

• Austenite

• Martensite

To get the desired property of steel by heating and cooling process........

• Normalising

• Hardening

• Heat treatment

• Tempering

Name of the process having fine grains structure and mechanical properties ......

• Annealing

• Tempering

• Normalising

• Hardening

Steel having increase carbon is .......

• Hardening increases

• Strength increases

• Strength decreases

• Ductility improves

The steel which has 0.83 % of carbon, it increases the ............... of steel.

• Hardness

• Strength

• Malleability

• Ductility