5. For each of the following, indicate whether they are true or false statements

Question

5. For each of the following, indicate whether they are true or false statements a) The bending test is used to determine the material properties under shear conditions b) Both the material's toughness and resilience can be obtained from the stress-strain curves c) Fatigue occurs due to static loading for extended periods of time d) Substitutional solid solutions occurs between materials having similar sized atoms e) Cooling of normalized ferrous materials takes place outside the heating furnace

Explanation / Answer

a) False

When a bend test is performed on a specimen the material is subjected to all 3 fundamental stresses viz., tensile, compression and shear.

b)True

Toughness can be found using the area under the stress strain curve and resilience can be found using yield stress and young's modulus

c)False

Fatigue occurs due to repeated variational loading

d)False

Substitution solid solution is formed when a large solute atom replaces a small solvent atom from their lattice positions

e)True

For normalizing of ferrous materials , the material is removed from the furnace and then air cooled.

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