Age hardening is connected with________________?

Related Mcqs:

1. Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?

   A. Anodising
   B. Tempering
   C. Carburising
   D. Annealing

2. Case hardening is not done by________________?

   A. Nitriding
   B. Hot dipping
   C. Electroplating
   D. Both ‘B’ & ‘C’

3. To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?

   A. Tempered
   B. Normalised
   C. Annealed
   D. Hardened

4. Which of the following metals is the most prone to work hardening ?

   A. Brass
   B. Aluminium
   C. Copper
   D. Lead

5. The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ?

   A. 0.2
   B. 0.4
   C. 0.6
   D. 0.8

6. Case hardening of a material is__________________?

   A. Followed by tempering or carburising
   B. Preceded by its tempering
   C. Done to get a soft ductile interior with a very hard surface
   D. Carried out to get extreme hardness in its core

7. Strain hardening effect in metals subjected to cold working is due to the _______________ mechanism?

   A. Slip
   B. Fracture
   C. Winning
   D. Dislocation

8. Hardening of steel is not possible, unless it is heated _________________ critical point ?

   A. Above the highest
   B. Above the lowest
   C. Between the first & second
   D. Between the second & third

9. Cold working of a material results in increase in hardness, which is termed as the ______________ hardening ?

   A. Cold
   B. Work
   C. Age
   D. Induction

10. Strain hardening effect in a metal subjected to cold working is due to the ______________ mechanism?

    A. Fracture
    B. Dislocation
    C. Slip
    D. Twinning