Define the basic hardening process for steels. Explain the nature of precipitation hardening. Explain the nature of surface hardening, and key factors. Explain the nature of annealing. Explain the nature of stress relieving, including the effect on dislocation density.
Heat treat steel with a variety of processes and report on changes in structures and hardness.
Explain the properties of aluminum alloys. Differentiate among the use of continuous, chopped, and woven fibers for reinforcement. Describe an aggregate composite. Describe the concept of property averaging. Describe specific strength and its significance.