Garbuzova KR1 Option 34

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Option 34

• Draw a state diagram for the case of the formation of a continuous series of solid

Solutions. What is a solid solution?

• What processes occur during hot 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 2.4% C. What is the structure of this

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

• The pre-eutectoid carbon steel has a coarse-grained superheat structure. Which

Type of heat treatment should be applied to eliminate the state of overheating? Apply on

A diagram of the iron-cementite state of the ordinate of any pre-eutectoid steel and explain which

Changes occur in the structure of steel under this heat treatment.

• Assign a gear processing mode of steel 20, which ensures the hardness of the tooth

58 ... 62 HRC. Describe the transformations occurring in steel, the structure and properties of the tooth surface

And the gear core after heat treatment.