Garbuzova KR1 Option 16

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Option 16

• How do dislocations affect the mechanical properties of metals?
• Explain the nature and nature of the change in the properties of the metal under plastic

Deformation.

• 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 1.3% C. What is the structure of this

Alloy at room temperature and how such an alloy is called?

• 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 45 HRC.

Indicate how this regime is called, describe the nature of the transformations and what structure

Is obtained in this case.

• Using the iron-cementite state diagram, determine the temperature

Normalization, annealing and hardening for steel 30. Describe these thermal regimes

And describe the structure and properties of the steel after each treatment.