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Heat Treatment of Carbon Steels

Stefan Serbic 12 preguntas 5,0 (1 valoración)

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Preguntas del test (12)

  1. 1The purpose of heat treatment of carbon steel is
    1. ATo soften the carbon steel prior to shaping and machining
    2. BTo relieve the residual stresses from strain hardening that occurs during cold
      forming
    3. CTo control dispersion strengthening for achieving the final strength and
      hardness required in the finished product
    4. DAll above
  2. 2The microstructure in annealed carbon steel is
    1. AAustenite
    2. BPearlite
    3. CBainite
    4. DMartensite
  3. 3Cooling down austenite by moderate cooling rate forms
    1. ACementite
    2. BPearlite
    3. CBainite
    4. DMartensite
  4. 4Carbon steel tempering should take place
    1. APrior to quenching
    2. BAfter quenching
    3. CPrior to normalizing
    4. DAfter normalizing
  5. 5Which of the following microstructures in carbon steel is a two-phased, lamellar (or
    layered) structure composed of alternating layers of ferrite (88 wt. %) and cementite
    (12 wt. %)?
    1. ABainite
    2. BAustenite
    3. CMartensite
    4. DPearlite
  6. 6When austenite is cooled down at a very high rate by quenching, its FCC structure
    will transform to Body Centred Tetragonal (BCT) known as
    1. AAustenite
    2. BBainite
    3. CCementite
    4. DMartensite
  7. 7Which of the followings in carbon steel is an extremely hard and brittle phase which
    lacks toughness so it should be tempered?
    1. AAustenite
    2. BMartensite
    3. CPearlite
    4. DFerrite
  8. 8List the hardness in ascending order (from low to high) of micro-constitutes in plain
    carbon steel

    [blank_start]Ferrite[blank_end]-[blank_start]Pearlite[blank_end]-[blank_start]Bainite[blank_end]-[blank_start]Martensite[blank_end]
    1. AFerrite
    2. BPearlite
    3. CBainite
    4. DMartensite
  9. 9In the process of carbon steel normalizing, it is cooled down in
    1. Afurnace
    2. Bair
    3. Cwater
    4. DSaline water
  10. 10In process of carbon steel quenching, which cooling medium has the bubbling
    problem?
    1. AWater
    2. BOil
    3. CSalt water
    4. DAll above

Información

Descripción
Engineering Test sobre Heat Treatment of Carbon Steels, creado por Stefan Serbic el 07/04/2018.
Idioma
English
Visitas
237
Etiquetas
engineering
Valoración
5,0 de 5 · 1 valoración
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