Mechanical Engineering Exam > Mechanical Engineering Questions > Chromium in steel:a) Improves wear resistance...
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Chromium in steel:
a) Improves wear resistance, cutting
ability and toughness
b)
Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenability
d) Gives ductility, toughness, tensile strength and anticorrosion properties
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Chromium in steel:a) Improves wear resistance, cuttingability and toug...
Chromium in steel Increases strength, hardness, hardenability, and toughness, as well as creep resistance and strength at elevated temperatures.
It improves machinability and resistance to corrosion and it intensifies the effects of other alloying elements.
In hot-work steels and high speed steels,
it increases red-hardness properties
It improves machinability and resistance to corrosion and it intensifies the effects of other alloying elements.
In hot-work steels and high speed steels,
it increases red-hardness properties
Most Upvoted Answer
Chromium in steel:a) Improves wear resistance, cuttingability and toug...
Chromium is an important alloying element in steel that provides various beneficial properties to the material. The correct answer, option 'A', states that chromium improves wear resistance, cutting ability, and toughness. Let's explore this answer in detail:
Improves Wear Resistance:
- Chromium forms a hard and wear-resistant oxide layer on the surface of the steel, known as chromium oxide (Cr2O3).
- This oxide layer acts as a barrier, protecting the underlying steel from wear and corrosion.
- The presence of chromium in steel enhances its ability to withstand friction and abrasive forces, making it more resistant to wear.
Improves Cutting Ability:
- Chromium improves the machinability of steel, making it easier to cut and shape.
- It reduces the tendency of the steel to work-harden during cutting, which can cause tool wear and reduce cutting efficiency.
- The addition of chromium promotes chip formation and improves the overall cutting performance of the steel.
Enhances Toughness:
- Chromium increases the toughness of steel, which refers to its ability to absorb energy and resist fracture.
- It helps to refine the microstructure of the steel, preventing the formation of large, brittle grains.
- The presence of chromium improves the impact resistance and ductility of the steel, making it less prone to cracking or breaking under stress.
In summary, chromium in steel improves wear resistance, cutting ability, and toughness. It forms a protective oxide layer, enhances machinability, and increases the material's ability to withstand wear and impact forces. These properties are crucial in various applications where steel is used, such as manufacturing machinery, tools, and structural components.
Improves Wear Resistance:
- Chromium forms a hard and wear-resistant oxide layer on the surface of the steel, known as chromium oxide (Cr2O3).
- This oxide layer acts as a barrier, protecting the underlying steel from wear and corrosion.
- The presence of chromium in steel enhances its ability to withstand friction and abrasive forces, making it more resistant to wear.
Improves Cutting Ability:
- Chromium improves the machinability of steel, making it easier to cut and shape.
- It reduces the tendency of the steel to work-harden during cutting, which can cause tool wear and reduce cutting efficiency.
- The addition of chromium promotes chip formation and improves the overall cutting performance of the steel.
Enhances Toughness:
- Chromium increases the toughness of steel, which refers to its ability to absorb energy and resist fracture.
- It helps to refine the microstructure of the steel, preventing the formation of large, brittle grains.
- The presence of chromium improves the impact resistance and ductility of the steel, making it less prone to cracking or breaking under stress.
In summary, chromium in steel improves wear resistance, cutting ability, and toughness. It forms a protective oxide layer, enhances machinability, and increases the material's ability to withstand wear and impact forces. These properties are crucial in various applications where steel is used, such as manufacturing machinery, tools, and structural components.
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Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer?
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Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. 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 Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. 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 Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer?.
Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. 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 Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. 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 Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer?.
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Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Chromium in steel:a) Improves wear resistance, cuttingability and toughnessb)Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistantpropertiesc) Improve cutting ability and reduces hardenabilityd) Gives ductility, toughness, tensile strength and anticorrosion propertiesCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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