1. A 1080 steel is cooled at the fastest possible rate that still permits all pearlite to form. What is this cooling rate? What Jominy distance, and hardness are expected for this cooling rate?
2. Determine the hardness and microstructure at the center of a 1.5-in.-diameter 1080 steel bar produced by quenching in
(a) unagitated oil,
(b) unagitated water, and
(c) agitated brine.