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METALLURGY TEST 1 EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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METALLURGY TEST 1 EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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METALLURGY TEST 1 EXAM 2024 WITH100% ACCURATE SOLUTIONS
Materials with this type of bonding can exhibit both high strength and high ductility - correct answer✔✔
metallic
materials with this type of bonding have valence electrons that are free to wander throughout the
structure (high conductivity) - correct answer✔✔ metallic
this type of bonding is considered the weakest of the four types listed below - correct answer✔✔
vander waals
bonds of this type tend to be "directional' and the limited number of nearest neighbors often leads to
light weight (low density) materials - correct answer✔✔ covalent
this type of bonding requires two different types of atoms (an electron donor and an electron reciever) -
correct answer✔✔ ionic
the number of "nearest neighbor" atoms in a crystal structure is called the - correct answer✔✔
coordination number
in the body centered cubic (BCC) cystal structure, atoms touch (are in contact) along the - correct
answer✔✔ body diagonals
the coordination number for a body-centered cubic (BCC) structure is - correct answer✔✔ 8
the stacking sequence of close packed planes in the face centered cubic (FCC) crystal structure is -
correct answer✔✔ ABCABC
, the packing factor for structures involving stacked close-packed planes (highest possible) is: - correct
answer✔✔ 74%
which of the following crystals structures does not contain close packed planes - correct answer✔✔ BCC
compared to materials with other crystal structures, materials with the HP structure tend to - correct
answer✔✔ be brittle
aluminum copper and silver are typically soft, weak and ductile metals. These are characteristics of
which crystal structure? - correct answer✔✔ FCC
the directions of atom touching in the FCC structure have the miller indies form of - correct answer✔✔
110
the miller indices for direction a are - correct answer✔✔ __
111
the miller indices for direction b are - correct answer✔✔ _ _
101
the miller indices for plane C are - correct answer✔✔ 101
The miller indices for plane D are - correct answer✔✔ _
111
materials that can exist in more than one crystal structure (depending upon the conditions of
temperature and pressure) are called - correct answer✔✔ polymorphic
adding additional imperfections to a commercial metal (one that already contains defects) will most
always _____ the strength and _____ the ductility - correct answer✔✔ increase, decrease
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