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Garbuzova KR1 Option 43
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Option 43
1. What is the solid solution of implantation? Give an example.
2. What are the main characteristics of the mechanical properties determined in the test for
Stretching? Describe them.
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 3.4% C. What is the structure of this
Alloy at room temperature and how such an alloy is called?
4. 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 250 HB.
Specify how this mode is called, what structure is obtained in this case.
5. Steel 40 was quenched from 750 and 830 ° C. Using the diagram
State of iron-cementite, indicate the selected heating temperatures and describe
Transformations that occur under two modes of hardening. Which regime should be given
Preference and why?
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