Garbuzova KR1 Option 22

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Option 22
1. How does the degree of supercooling affect the amount of grain during crystallization?
2. What is the relative elongation (?,%)? How this characteristic is determined
Mechanical properties of metal?
3. Draw a diagram of the iron-iron carbide state, indicate the structural
Components in all areas of the diagram, describe the transformations and construct a curve
Cooling (using a phase rule) for an alloy containing 4.0% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. Draw a diagram of the isothermal transformation of austenite for steel V8, apply
On it is a curve of the isothermal treatment regime, which provides a hardness of 450 HB.
Specify, as this mode is called, describe the essence of transformations and what structure you get
In this case?
5. What is normalization? Using the iron-cementite state diagram, designate
The normalization temperature of any pre-eutectoid and any hypereutectoid steel. Describe
Transformations occurring in steels under the chosen treatment regime, the resulting structure and
Properties.

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