Garbuzova KR1 Option 26

Product description

Option 26

• Explain the essence of the phenomenon of dendritic liquation and methods of its elimination.
• What are the standard characteristics of mechanical properties

Plasticity of metals and alloys? How are they determined?

• 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 1.2% C. What is the structure of this

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

• How can a coarse-grained structure in forged steel 30 be eliminated? Using

Diagram of iron-cementite state, justify the choice of the heat treatment mode for

Correction of the structure. Describe the structural transformations and the nature of the change in properties.

• Indicate the temperatures at which the process of strength nitriding is performed.

Explain why nitriding is not performed at temperatures below 500 and above 700 ° C

(Using the iron-nitrogen state diagram). What are the grades of steels used for

Nitriding, and describe the full cycle of their thermal and chemical-thermal treatment