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