What information is conveyed by the ttt curve

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1. Why are metals heat treated?

2. Identify the important reasons why metals are annealed.

3. What is the most important heat treatment for hardening steels?

4. What is the mechanism by which carbon strengthens steel during heat treatment?

5. What information is conveyed by the TTT curve?

6. What function is served by tempering?

7. Define hardenability

8. Name some of the elements that have the greatest effect on the hardenability of steel.

9. Indicate how the hardenability alloying elements in steel affect the TTT curve.

10. Define precipitation hardening.

11. How does carburizing work?

12. Identify the selective surface-hardening methods.

13. (Video) List three properties of ferrite at room temperature.

14. (Video) How does austenite differ from ferrite?

Reference no: EM131255839

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