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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.

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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?

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