11.4 (a) Sterling silver is an alloy of silver with 7.5 per- cent copper. Describe the...

 

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11.4 (a) Sterling silver is an alloy of silver with 7.5 per- cent copper. Describe the structure that one should expect if a specimen of sterling silver were to be heated from room temperature to 782°C and allowed to come tO equilibrium at this latter temperature. (b) If the specimen of sterling silver equilibriated at 782 °C is now cooled very slowly to 400°C, what would be the nature of the microstructure? Give the amount and com- position of each phase. (c) Finally assume the specimen is cooled very rapidly (quenched) from 782°C to 400°C. Describe the structure that one might expect. 11.4 (a) Sterling silver is an alloy of silver with 7.5 per- cent copper. Describe the structure that one should expect if a specimen of sterling silver were to be heated from room temperature to 782°C and allowed to come tO equilibrium at this latter temperature. (b) If the specimen of sterling silver equilibriated at 782 °C is now cooled very slowly to 400°C, what would be the nature of the microstructure? Give the amount and com- position of each phase. (c) Finally assume the specimen is cooled very rapidly (quenched) from 782°C to 400°C. Describe the structure that one might expect.

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