WorksheetsPhase Diagrams and Microstructure Quiz
Total questions: 5
Worksheet time: 3mins
Name
Class
Date
1.
What is the maximum solubility of carbon in alpha iron (α-Fe) at 910 °C?
a)
0.022 wt%
b)
0.5 wt%
c)
2.14 wt%
d)
0.021 wt%
2.
At what temperature does gamma iron (γ-Fe) transform to delta iron (δ-Fe)?
a)
727 °C
b)
1,538 °C
c)
1,394 °C
d)
912 °C
3.
Which phase diagram is an example of an isomorphous system?
a)
Copper-zinc (Cu-Zn)
b)
Iron-carbon (Fe-C)
c)
Copper-nickel (Cu-Ni)
d)
Iron-iron carbide (Fe-Fe3C)
4.
What is the crystal structure of gamma iron (γ-Fe)?
a)
Hexagonal close-packed (HCP)
b)
Simple cubic (SC)
c)
Body-centered cubic (BCC)
d)
Face-centered cubic (FCC)
5.
What is the primary characteristic of cementite (Fe3C)?
a)
It is very ductile
b)
It is very hard and brittle
c)
It is non-magnetic
d)
It has a low melting point
100 %
