Iron Allotropy and Fe-C Phase Diagram Quiz
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Questions and Answers

Which crystal structure is commonly found in iron at 910oC?

  • BCC (correct)
  • FCC
  • HCP
  • None of the above

    • Which crystal structure is commonly found in iron at 1400oC?

  • BCC
  • FCC
  • HCP (correct)
  • None of the above

    • Which crystal structure is commonly found in metals like aluminum, copper, gold, silver, and lead?

  • BCC
  • FCC (correct)
  • HCP
  • None of the above

    • What is the unit cell dimension (a0) related to in the FCC crystal structure?

    <p>Atomic radius (r)</p> Signup and view all the answers

    What is the atomic packing factor (APF) formula for the FCC crystal structure?

    <p>APF = 4r/Ö2</p> Signup and view all the answers

    What are the two common crystal structures found in metallic materials?

    <p>The two common crystal structures found in metallic materials are body-centred cubic (BCC) and face-centred cubic (FCC).</p> Signup and view all the answers

    What is the temperature at which iron exhibits a BCC crystal structure?

    <p>Iron exhibits a BCC crystal structure at 910oC.</p> Signup and view all the answers

    What is the temperature at which iron exhibits an FCC crystal structure?

    <p>Iron exhibits an FCC crystal structure at 1400oC.</p> Signup and view all the answers

    What is the atomic radius (r) related to in the FCC crystal structure?

    <p>The atomic radius (r) is related to the unit cell dimension (a0) in the FCC crystal structure.</p> Signup and view all the answers

    What is the atomic packing factor (APF) formula for the FCC crystal structure?

    <p>The atomic packing factor (APF) formula for the FCC crystal structure is APF = vol. ato.</p> Signup and view all the answers

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