10 Questions
What is a necessary condition for a material to be considered tough?
High strength with moderate ductility
What type of deformation is likely to occur in metals under compressive loads?
Plastic deformation
What is the primary difference between the stress-strain behavior of metals under compressive and tensile loads?
The absence of necking in the compressive stress-strain curve
What is hardness a measure of in a material?
Resistance to plastic deformation
What is the primary basis for the Mohs hardness scale?
The ability of one material to scratch another
What is a key limitation of the Mohs hardness scale?
It is a qualitative scale
What is the primary advantage of quantitative hardness testing techniques?
They are more accurate than qualitative tests
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
What is a characteristic of brittle materials?
They fracture with little to no plastic deformation
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
Quiz on mechanical properties of metals, including percent reduction in area and resilience, which is the capacity of a material to absorb energy when deformed elastically.
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