Crystal structure of γ-iron (austenite) Identify the space lattice of gamma iron (the high-temperature phase of iron known as austenite). Choose the correct option.
Mechanical Engineering
Engineering Materials
Difficulty: Easy
Choose an option
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AFace centred cubic (FCC) space lattice
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BBody centred cubic (BCC) space lattice
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CClose-packed hexagonal (HCP) space lattice
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DNone of these
Answer
Correct Answer: Face centred cubic (FCC) space lattice
Explanation
ConceptGamma iron (austenite) has a face centred cubic (FCC) structure. Alpha iron (ferrite) is BCC at room temperature, while HCP does not occur in pure iron under normal conditions.
Final AnswerFace centred cubic (FCC) space lattice