Option 5
1. What are bounded and unbounded solid solutions? What are the necessary
Conditions for the formation of unbounded solid solutions?
2. Describe the nature of the work hardening and examples of its practical use.
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 the phase rule) for an alloy containing 1.1% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. With the continuous cooling of steel V8, the structure of the cane + martensite is obtained.
Put on the diagram of the isothermal transformation of austenite the cooling curve,
Ensuring the receipt of this structure. Specify the transformation temperature ranges and
Describe the nature of the transformation in each of them.
5. Using the iron-cementite state diagram, set the temperature to full and
Incomplete quenching for steel 45 and describe the structure and properties of steel after each type
Heat treatment.