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Materials Science control 1 option 6 by Garbuzov
Uploaded: 22.07.2019
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There are given exhaustive answers to 5 questions of option No. 1 of the test paper No. 1 on materials science, according to the training manual Garbuzova N.Е.
1. Draw a state diagram for the case of limited solubility of the components in solid form. Indicate the structural components in all areas of this diagram and describe the structure of typical alloys of different composition found in this system.
2. The drawing of copper wire is carried out in several transitions. In some cases, the wire at the last transitions is broken. Explain the reason for the rupture and indicate the way to prevent it.
3. Draw a diagram of the state of iron - iron carbide, indicate the structural components in all areas of the diagram, describe the transformations and construct a cooling curve (using the phase rule) for the alloy containing 0.5% C. What is the structure of this alloy with room temperature and how is such an alloy called?
4. Draw a diagram of the isothermal transformation of austenite for steel V8. Apply to it the curve of the mode of isothermal treatment, providing a hardness of 200 HB. Indicate how this mode is called and what structure is obtained in this case.
5. Using the iron-cementite state diagram, set the normalization, annealing, and quenching temperatures for steel U12. Describe these heat treatment regimes and describe the structure and properties of the steel after each type of treatment.
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