Explain the tempering process in the heat treatment of metals.
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- Explain the hardening process used in the heat treatment of the metals.Explain how does the reduction of the grain size increase the strength of the single-phase metals?a). Explain the two types of annealing process in the heat treatment of metals. b). Explain the stages in a heat treatment process.
- Explain the hot working of metals related to the grain structure diagrams.a) Explain the normalizing process in the heat treatment of metals. b) What are the final properties obtained from the tempering process?What factors determine the Debye temperature of a particular element? Provide comments,with sufficient details, on the choice of factors.
- List and briefly define the five main strengthening mechanisms in metals.a) Explain why work hardenable aluminium alloys cannot be age-hardened because the precipitation hardening reaction does not occur. To maintain strength, what might be another reason why aluminium alloys can't be work hardened? (Think about dislocations.)In a tabular format, compare (a) Composition and heat treatment, (b) microstructure, for different cast irons and steels.