CHAPTER 1 - 8 Tempering is usually a helpful metallurgical...

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CHAPTER 1 ANSWERS: 1. The study of metallurgy actually explores what make metals behave the way they do 2. Iron 3. Steel in itself is an alloy of at least carbon and iron. Various other elements are added to obtain different performance from the material such as increasing temperature resistance, increase mechanical properties and to provide corrosion resistance. 4. Two categories: Ferrous: iron ‘, steel Non ferrous: aluminum, titanium, copper, nickel, magnesium 5. metallurgical process known as “ case hardening “was used 6. The internal stress cause distortion of the disc until process annealing was used 7. Tempering is a reheating of metal to slightly soften it
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Unformatted text preview: 8. Tempering is usually a helpful metallurgical process performed to make the metal more stress free, distortion free, and crack free. However, in the case of this cutter ,the unintentional tempering was destroying it 9. An other metallurgical process called air quenching was substituted for water quenching 10. An engineer needs to know what kind of the metal needs to be used for the structure to built correctly 11. A troubleshooter should be trained to recognize the cause of cracks and excessive wear, so they need to know how to examine a material to see whether it has become too hard and brittle....
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