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When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain
[1990]
- a)Pearlite and cementite
- b)Ferrite and cementite
- c)Austenite and ferrite
- d)Austenite and cementite
Correct answer is option 'D'. Can you explain this answer?
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When 1.0% plane carbon steel is slowly cooled from the molten state to...
The resulting structure will contain Austenite & cementite.
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When 1.0% plane carbon steel is slowly cooled from the molten state to...
°C, it undergoes a phase transformation from austenite to ferrite and pearlite. This transformation is known as eutectoid transformation. During this process, the carbon atoms diffuse out of the austenite and combine with iron atoms to form tiny particles of cementite (Fe3C), which form within the ferrite matrix to create pearlite.
The resulting microstructure is a mixture of ferrite and pearlite, with the pearlite appearing as a series of alternating light and dark layers under a microscope. The ferrite is a relatively soft and ductile phase, while the pearlite is harder and more brittle. This microstructure gives the steel good strength and toughness, making it suitable for a wide range of applications, including construction, automotive, and machinery.
However, if the steel is cooled rapidly from the molten state (quenched), the austenite phase is transformed into martensite, a hard and brittle phase with little ductility. This process is known as martensitic transformation and is often used to produce high-strength steel components.
The resulting microstructure is a mixture of ferrite and pearlite, with the pearlite appearing as a series of alternating light and dark layers under a microscope. The ferrite is a relatively soft and ductile phase, while the pearlite is harder and more brittle. This microstructure gives the steel good strength and toughness, making it suitable for a wide range of applications, including construction, automotive, and machinery.
However, if the steel is cooled rapidly from the molten state (quenched), the austenite phase is transformed into martensite, a hard and brittle phase with little ductility. This process is known as martensitic transformation and is often used to produce high-strength steel components.
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When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer?
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When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer?.
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When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain[1990]a)Pearlite and cementiteb)Ferrite and cementitec)Austenite and ferrited)Austenite and cementiteCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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