Mechanical Engineering Exam > Mechanical Engineering Questions > A given steel test specimen is studied under ...
Start Learning for Free
A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known as
- a)Ferrite
- b)Cementite
- c)Austenite
- d)Martensite
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A given steel test specimen is studied under metallurgical microscope....
Ans. (b)
Most Upvoted Answer
A given steel test specimen is studied under metallurgical microscope....
Fe3C Phase in Steel Test Specimen
Introduction:
When studying a steel test specimen under a metallurgical microscope, different phases can be observed. One of these phases is Fe3C, also known as cementite.
Explanation:
- Cementite (Fe3C) is a compound that is formed in steel during the process of solidification and cooling. It is a combination of iron (Fe) and carbon (C) atoms.
- Fe3C is a hard and brittle phase that is commonly found in steels with a high carbon content, such as cast iron.
- Under the metallurgical microscope, Fe3C appears as a distinct phase with a characteristic appearance. It has a dark contrast compared to the surrounding phases, making it easily identifiable.
Identification of Fe3C:
When observing a steel test specimen under a metallurgical microscope, the following steps can be followed to identify the Fe3C phase:
1. Set the magnification to 100X.
2. Scan the specimen for distinct phases.
3. Look for a phase with a dark contrast compared to the surrounding phases.
4. Verify the presence of Fe3C by comparing its appearance with reference images or known standards.
Other Phases:
While Fe3C is one of the phases observed in the steel test specimen, it is important to note that there are other phases that can also be present, such as:
- Ferrite (α-Fe): This is a solid solution of carbon in iron with a body-centered cubic (BCC) crystal structure. It is relatively soft and ductile.
- Austenite (γ-Fe): This is a solid solution of carbon in iron with a face-centered cubic (FCC) crystal structure. It is relatively soft and ductile.
- Martensite: This is a metastable phase that forms during rapid cooling of austenite. It has a body-centered tetragonal (BCT) crystal structure and is characterized by high hardness.
Conclusion:
In summary, when studying a steel test specimen under a metallurgical microscope, the Fe3C phase, also known as cementite, can be observed. Fe3C appears as a distinct phase with a dark contrast compared to the surrounding phases. Other phases that may be present include ferrite, austenite, and martensite.
Introduction:
When studying a steel test specimen under a metallurgical microscope, different phases can be observed. One of these phases is Fe3C, also known as cementite.
Explanation:
- Cementite (Fe3C) is a compound that is formed in steel during the process of solidification and cooling. It is a combination of iron (Fe) and carbon (C) atoms.
- Fe3C is a hard and brittle phase that is commonly found in steels with a high carbon content, such as cast iron.
- Under the metallurgical microscope, Fe3C appears as a distinct phase with a characteristic appearance. It has a dark contrast compared to the surrounding phases, making it easily identifiable.
Identification of Fe3C:
When observing a steel test specimen under a metallurgical microscope, the following steps can be followed to identify the Fe3C phase:
1. Set the magnification to 100X.
2. Scan the specimen for distinct phases.
3. Look for a phase with a dark contrast compared to the surrounding phases.
4. Verify the presence of Fe3C by comparing its appearance with reference images or known standards.
Other Phases:
While Fe3C is one of the phases observed in the steel test specimen, it is important to note that there are other phases that can also be present, such as:
- Ferrite (α-Fe): This is a solid solution of carbon in iron with a body-centered cubic (BCC) crystal structure. It is relatively soft and ductile.
- Austenite (γ-Fe): This is a solid solution of carbon in iron with a face-centered cubic (FCC) crystal structure. It is relatively soft and ductile.
- Martensite: This is a metastable phase that forms during rapid cooling of austenite. It has a body-centered tetragonal (BCT) crystal structure and is characterized by high hardness.
Conclusion:
In summary, when studying a steel test specimen under a metallurgical microscope, the Fe3C phase, also known as cementite, can be observed. Fe3C appears as a distinct phase with a dark contrast compared to the surrounding phases. Other phases that may be present include ferrite, austenite, and martensite.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Top Courses for Mechanical EngineeringView all
A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer?
Question Description
A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. 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 A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. 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 A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer?.
A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. 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 A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. 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 A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer?.
Solutions for A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A given steel test specimen is studied under metallurgical microscope.Magnification used is 100 X. In that different phases are observed. One of them isFe3C. The observed phase Fe3C is also known asa)Ferriteb)Cementitec)Austenited)MartensiteCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup