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10 Questions

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Mechanical Properties of Metals

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Questions and Answers

What is a necessary condition for a material to be considered tough?

High strength with moderate ductility (correct)

High resilience with moderate brittleness

High hardness with moderate resilience

High ductility with moderate strength

What type of deformation is likely to occur in metals under compressive loads?

Plastic deformation (correct)

Elastic-plastic deformation

Elastic deformation

Brittle fracture

What is the primary difference between the stress-strain behavior of metals under compressive and tensile loads?

The presence of a plateau in the compressive stress-strain curve

The absence of necking in the compressive stress-strain curve (correct)

The presence of a maximum point in the stress-strain curve

The presence of a yield point in the compressive stress-strain curve

What is hardness a measure of in a material?

Resistance to plastic deformation Signup and view all the answers

What is the primary basis for the Mohs hardness scale?

The ability of one material to scratch another Signup and view all the answers

What is a key limitation of the Mohs hardness scale?

It is a qualitative scale Signup and view all the answers

What is the primary advantage of quantitative hardness testing techniques?

They are more accurate than qualitative tests Signup and view all the answers

What is the primary difference between resilience and toughness?

Resilience is a measure of energy absorption, while toughness is a measure of energy absorption per unit volume Signup and view all the answers

What is a characteristic of brittle materials?

They fracture with little to no plastic deformation Signup and view all the answers

What is a key difference between ductile and brittle fracture modes?

Ductile fracture occurs with significant plastic deformation, while brittle fracture occurs with little to no plastic deformation Signup and view all the answers