Building Materials: Microstructure and Chemical Composition
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Questions and Answers

Which of the following is a typical property of cast iron materials?

  • Brittle or ductile
  • Ductile and formable
  • High strength in tension and compression
  • High compressive strength (correct)

    • In the Fe-C system, which phase has the highest carbon content?

  • Austenite
  • Pearlite
  • Cementite (correct)
  • Ferrite

    • What effect does cooling medium have on the formation of graphite in cast iron?

  • Prevents the formation of graphite
  • Promotes the formation of nodular graphite (correct)
  • Increases the brittleness of cast iron
  • Promotes the formation of flake graphite

    • How does wood heterogeneity affect its properties?

    <p>Leads to variations in strength across different areas</p> Signup and view all the answers

    Which of the following statements is true about graphite in cast iron?

    <p>Graphite improves the machinability of cast iron</p> Signup and view all the answers

    In crystal systems, which type of crystal structure has 4 atoms per unit cell?

    <p>Body-centered</p> Signup and view all the answers

    Which crystal system is characterized by a triclinic structure?

    <p>Monoclinic</p> Signup and view all the answers

    What is the crystal system that encompasses the hexagonal structure?

    <p>Hexagonal</p> Signup and view all the answers

    Which element is commonly associated with a cubic face-centered crystal structure?

    <p>Ag</p> Signup and view all the answers

    How many atoms are typically found in a primitive crystal unit cell?

    <p>1</p> Signup and view all the answers

    Which crystal system is associated with the highest lattice density?

    <p>Cubic</p> Signup and view all the answers

    Which crystal system is known for its rhombohedral shape?

    <p>Hexagonal</p> Signup and view all the answers

    '52.36%, 68.08%, 74.05%' are percentages associated with which crystal structure material?

    <p>Ni</p> Signup and view all the answers

    What is the typical number of atoms present in a cubic body-centered unit cell?

    <p>4</p> Signup and view all the answers

    Which crystal structure is characterized by its triangular shape?

    <p>Trigonal</p> Signup and view all the answers

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