Material Science and Engineering Flashcards
(19 cards)
Which of the following is a characteristic of crystalline materials?
They exhibit long-range atomic order
The material property that defines its ability to resist deformation under stress is known as?
Hardness
Which of the following is an example of a metallic bond?
Electrons are free to move within a lattice
Which of the following materials is most likely to exhibit plastic deformation?
Steel
What is the primary factor determining the hardness of a material?
The bonding strength between atoms
Which material property describes the ability to absorb energy and plastically deform without fracturing?
Toughness
Which of the following is NOT a typical type of crystalline defect?
Surface defect
The transition temperature for a material is defined as the temperature at which
The material becomes brittle
The primary difference between ductile and brittle fracture is that
Brittle fracture occurs with little plastic deformation
Which of the following describes the tensile strength before failure?
The maximum stress a material can endure without breaking.
The atomic packing factor (APF) of a face-centered cubic (FCC) structure is
0.74
The primary strengthening mechanism in the process of work hardening (strain hardening) is
Grain boundary sliding
Which of the following is an example of a ceramic material?
Silicon carbide
In polymers, the degree of crystallinity influences which of the following properties?
Transparency
Which of the following materials is used primarily in the production of semiconductors?
They have no repeating atomic arrangement
The characteristics of a material to return to its original shape after being deformed is known as
Elasticity
What is the most common form of corrosion in metals?
Uniform corrosion
Which of the following metals is most prone to corrosion in the presence of oxygen?
Iron
Which of the following materials is used primarily in the production of semiconductors?
Silicon
