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WorksheetsENG1001B Term 2: Tutorial Week 1
Total questions: 12
Worksheet time: 6mins
What kind of structure is depicted in the above?
SC
FCC
BCC
HCP
What kind of structure is denoted in the image?
FCC
BCC
SC
HCP
The coordination number of a hexagonal closed packed structure is (a) .
The body-centred cubic structure has ___ atoms in the unit cell.
1
2
3
4
What kind of crystalline defect is shown in the image?
self-interstitial
substitutional impurity
vacancy
interfacial
What kind of crystalline defect is shown in the image?
screw dislocation
mix dislocation
substitutional impurity
edge dislocation
What kind of crystalline defect is shown in the image?
line dislocation
edge dislocation
self-interstatial atoms
grain boundary
A crystal structure experiences a shear stress. The defect most likely to form is a
edge dislocation
vacancy
grain boundary
screw dislocation
The magnitude and direction of lattice distortion associated with a dislocation are specified by its (a) vector.
Given the stress-strain curves in the picture, which material has the most ductile response?
1340 Steel
Stainless steel (18-8)
Aluminium alloy 2024-T81
Structural steel (mild steel)
Magnesium
Typically, dislocations occur relatively easily in metals, but relatively difficult in ceramics. This is because...
Metals have non-directional bonding
Ceramics have non-directional bonding
Metals have fewer directions for slip
Ceramics tend to have ionic bonds & electrostatic repulsion
How many total slip systems does a FCC lattice structure possess?
3
6
12
15
