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Garbuzova KR1 Option 31
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Option 31
1. Describe the point imperfections of the crystal structure of the metal. What are their
Effect on properties?
2. Parts made of copper, stamped in the cold state, had a low plasticity.
Explain the reason for this phenomenon and indicate how you can restore plasticity.
Assign a processing mode and give the character of the change in structure and properties.
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 3.2% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. Using the iron-cementite state diagram, determine the temperature of the total,
Incomplete annealing and normalization for steel 10. Describe these thermal regimes
And describe the structure and properties of steel.
5. What is the treatment of cold steel and in what cases is it used?
(Explain using martensitic curves.)
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