Plesse if possible write in a clear way so I can read. 16. The addition of…

Plesse if possible write in a clear way so I can read.

16. The addition of substitutional alloying elements in steel delays the eutectoid reaction. Why? 17. What is the importance of the pearlitic nose in the IT or CCT diagrams? 18. Why the IT diagram has the characteristic C-curve shape? 19. What do we mean by hardenability of the steel? 20. What are the benefits and drawbacks of high hardenability? 21. How do we measure the hardenability of a steel? 22. Why is martensite hard? 23. Why is quenching, to form martensite, followed by tempering? 24. W hat is the difference between carburizing and nitriding. At what temperatures do they take place? 25. W hat problems appear when quenching a low-hardenability steel in