Materials Science Practice Test 5

1. Arrange the following in increasing order of hardness: talc, gypsum, topaz diamond.

2. In strain hardening, the body is plastically deformed.

3. Design factor for most aircraft structures is 2.

4. For which of the following dislocation the strain is pure shear?

5. Which of the following factors are more accurate when used for polycrystal metals?

6. How many slip systems are there in BCC lattice?

7. Value of critical resolved shear stress for a given material at a given temperature ______

8. The yield strength of a material going through grain size reduction increases by a factor, k multiplied by:(where d is the diameter of grain)

9. Which of the following will decrease lattice strain?

10. Strain-relief crystallization takes place when deformed metals are heated.