Materials Engineering True-false
a) Austenite has a FCC crystal structure.
b) The chemical composition of Fe3C can be anything between 2.14 and 6.70 wt% C.
c) 1030 steel is hypereutectoid.
d) The Fe-Fe3C system has three important phase reactions: one peritectic, one eutectic, and one eutectoid.
e) A 1030 steel cooled from the austenite phase field to the ferrite + cementite field would have proeutectoid ferrite, eutectoid ferrite, and cementite present in the final microstructure.
f) Eutectic solder alloys are typically stronger than hypo- or hyper-eutectoid solders in the same system.
g) The lines on a temperature-composition phase diagram represent solubility limits.
h) Steel alloys are commonly divided into families such as low-carbon or medium-carbon based on the amount of carbon in the steel.
Materials Engineering True-false
a) Austenite has a FCC crystal structure.
b) The chemical composition of Fe3C can be anything between 2.14 and 6.70 wt% C.
c) 1030 steel is hypereutectoid.
d) The Fe-Fe3C system has three important phase reactions: one peritectic, one eutectic, and one eutectoid.
e) A 1030 steel cooled from the austenite phase field to the ferrite + cementite field would have proeutectoid ferrite, eutectoid ferrite, and cementite present in the final microstructure.
f) Eutectic solder alloys are typically stronger than hypo- or hyper-eutectoid solders in the same system.
g) The lines on a temperature-composition phase diagram represent solubility limits.
h) Steel alloys are commonly divided into families such as low-carbon or medium-carbon based on the amount of carbon in the steel.
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