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Questions and Answers
Austenite is a non-magnetic solid solution of ferri-carbide used in making corrosion-resistant steel.
Austenite is a non-magnetic solid solution of ferri-carbide used in making corrosion-resistant steel.
True (A)
Cementite (Fe3C) is a soft and ductile material.
Cementite (Fe3C) is a soft and ductile material.
False (B)
Bainite refers to needle-like crystals formed during phase transformation in the Fe-C system.
Bainite refers to needle-like crystals formed during phase transformation in the Fe-C system.
True (A)
The eutectic reaction in the Fe-C system occurs at $1146^\
The eutectic reaction in the Fe-C system occurs at $1146^\
The eutectoid mixture of ferrite () and cementite (Fe3C) is called Pearlite.
The eutectoid mixture of ferrite () and cementite (Fe3C) is called Pearlite.
Hypoeutectoid steels have a carbon composition greater than $0.8%$.
Hypoeutectoid steels have a carbon composition greater than $0.8%$.
Manganese (Mn) is an alloying element that improves hardenability, ductility, and wear resistance in steels.
Manganese (Mn) is an alloying element that improves hardenability, ductility, and wear resistance in steels.
Nickel (Ni) is added to steels to increase their strength and impact strength but not their toughness.
Nickel (Ni) is added to steels to increase their strength and impact strength but not their toughness.
The peritectic reaction in the Fe-C system involves the formation of austenite from liquid and ferrite phases.
The peritectic reaction in the Fe-C system involves the formation of austenite from liquid and ferrite phases.
Compositions beyond $2.1%$ carbon are considered as cast iron.
Compositions beyond $2.1%$ carbon are considered as cast iron.
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