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FAQs on Handwritten Notes: Hypereutectoid steels - Engineering Materials - Mechanical Engineering

1. What is the composition of hypereutectoid steels?
Ans. Hypereutectoid steels have a carbon content higher than the eutectoid composition, typically around 0.8% to 2.1% carbon.
2. What are the mechanical properties of hypereutectoid steels?
Ans. Hypereutectoid steels are known for their high hardness and wear resistance, making them suitable for applications requiring abrasive wear resistance.
3. How is the microstructure of hypereutectoid steels different from eutectoid steels?
Ans. The microstructure of hypereutectoid steels consists of primary cementite (Fe3C) particles in a matrix of pearlite, while eutectoid steels have a microstructure of pearlite.
4. What are the common applications of hypereutectoid steels?
Ans. Hypereutectoid steels are often used in making cutting tools, springs, and other components requiring high hardness and wear resistance.
5. How is the heat treatment process different for hypereutectoid steels compared to hypoeutectoid steels?
Ans. The heat treatment process for hypereutectoid steels involves a slower cooling rate to avoid the formation of excessive primary cementite, leading to a more refined microstructure and improved mechanical properties.
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