Assignment
1. A 0.90 % C hypereutectoid plain-carbon steel is slowly cooled form 900oC to a temperature just slightly above 723oC. Calculate the weight percent proeutectoid cementite and austenite present in the steel.
2. What is the normalizing heat treatment for steel? What are some of its purposes?
3. Describe the tempering process for a plain-carbon steel.
4. What are the advantages of the austempering process? What are the disadvantages?
5. What are some of the limitations of plain-carbon steels for engineering designs?
6. What are the principal alloying elements added to plain-carbon steels to make low-alloy steels?