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WorksheetsPhase Diagrams QCAA Engineering Unit 4
Total questions: 17
Worksheet time: 9mins
Which rule is used to calculate the percentages of solid and liquid in a lead-tin alloy?
Lever rule
Inverse lever rule
Phase rule
Equilibrium rule
What does the term "isomorphous" imply in a binary isomorphous system?
A. The metals form a single new solid alloy.
B. The metals form multiple solid phases.
C. The metals are not soluble in each other.
D. The metals form a liquid solution.
At what temperature does a 60 wt % Ni-copper alloy start to solidify according to the phase diagram?
A. 1350°C
B. 1310°C
C. 1270°C
D. 1240°C
Which line represents the boundary between the solid solution (S) and the liquid + solid (L + S) phases in the copper/nickel phase diagram?
Solidus line
Liquidus line
Cooling curve
Phase boundary line
What does the liquidus line indicate in a phase diagram?
The temperature at which solidification starts for a particular alloy composition.
The temperature at which solidification ends for a particular alloy composition.
The temperature at which the mixture is completely solid.
The temperature at which the mixture is completely gaseous.
What is the state of the mixture below the solidus line?
Completely solid
Completely liquid
Partially solid and partially liquid
Completely gaseous
What is the state of the mixture in the region labeled "liquid (L)" in the phase diagram?
Completely solid
Completely liquid
Partially solid and partially liquid
Completely gaseous
What is the composition of point A in the phase diagram?
60 wt% Ni and 40 wt% Cu
70 wt% Ni and 30 wt% Cu
35 wt% Ni and 65 wt% Cu
95 wt% Cu and 5 wt% Ni
What is the composition of point B in the phase diagram?
60 wt% Ni and 40 wt% Cu
70 wt% Ni and 30 wt% Cu
35 wt% Ni and 65 wt% Cu
95 wt% Cu and 5 wt% Ni
In the phase diagram, what is the solvent at point b?
Nickel
Copper
Lead
Tin
What is the temperature at which point A is located in the phase diagram?
1100°C
1500°C
1250°C
1200°C
What is the phase present in the region above the liquidus line?
Solid phase
Liquid phase
α-phase
β-phase
Which phase is present in the region labeled "α-phase" in the phase diagram?
Solid solution of Ni in Cu
Solid solution of Cu in Ni
Liquid solution of Ni and Cu
Gas phase of Ni and Cu
Which phase is present in the region labeled "β-phase" in the phase diagram?
Solid solution of Ni in Cu
Solid solution of Cu in Ni
Liquid solution of Ni and Cu
Gas phase of Ni and Cu
What does the solidus line indicate in a phase diagram?
The temperature at which solidification starts for a particular alloy composition.
The temperature at which solidification ends for a particular alloy composition.
The temperature at which the mixture is completely solid.
The temperature at which the mixture is completely gaseous.
What is the significance of the tie line in a phase diagram?
It indicates the temperature at which a phase transformation occurs.
It connects the compositions of coexisting phases at equilibrium.
It shows the cooling rate of the alloy.
It represents the boundary between different phases.
What is the cost of this delicious KFC zinger burger box?
$10.95
$12.95
$14.95
priceless
