Option 3
1. Describe the types of solid solutions. Give examples.
2. Give a definition of hardness. What methods measure the hardness of metals and alloys?
Describe them.
3. Draw a state diagram of iron-iron carbide, 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 2.2% 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 150 NW.
Specify how this mode is called and what structure is obtained in this case.
5. Using the iron-cementite state diagram, justify the choice of the thermal
Treatment used to remove cementite mesh in the hypereutectoid steel.