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Garbuzova KR1 Option 47
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Option 47
1. What is a solid solution? Types of solid solutions. Give examples.
2. What processes occur during hot plastic deformation and how does it occur
Do the structure and properties of the metal change?
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 5.8% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. U8 carbon steel after hardening and tempering has a hardness of 55 ... 60 HRC, Using
Diagram of the iron-iron carbide state and taking into account the transformations taking place in the steel at
Tempering, tempering temperature and tempering temperature. Describe the transformations that
Occur with the selected heat treatment modes and the final structure.
5. After hardening of the carbon steel, a structure was obtained consisting of ferrite and
Martensite. Draw on the state diagram the iron-cementite ordinate corresponding to
Composition of the given steel (approximately). Indicate the heating temperature adopted in this case
Hardening. What is the name of this kind of tempering? What transformations occurred during heating and
Cooling?
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