To what temperature should hypoeutectoid plain carbon steel be heated for hardening purposes according to the iron carbon diagram?

Using the time-temperature-transformation diagram, what steel phases would you generate by cooling from 900ºC A. quenching in cold water to 520ºC in 0.5 second, holding the sample temperature constant for 1000 seconds at 520ºC, and then quenching to room temperature B. cooling down to room temperature over a period of 2 weeks?

Using the Tin_Lead phase diagram, at 40% tin at 200C, what is the composition of the liquid phase? and how much of hte material is in that phsae?

Show microstructure of 8620 steel before homogenized annealing and microstructure after annealing.

For a 1095 steel alloy, what would the percent of each phase be at 730°C and 725°C?

12 – On modern large aeroplanes structure where can we find a more frequent use oftitanium alloys? And why is that?

Austentitic stainless steel's are not hardenable by cold working however Austentic stainless steel's can be strengthened by heat treatment true or false?

Q6/ A. Show how the precipitation heat treatment of precipitation hardenable alloys differs from dispersion hardening process of composite material. B. What are the main constitutes of composite materials and what are the roles of each constitute?

During a quenching process on a TTT diagram, we can transform pearlite into bainite. True or false?

1. Given the time-temperature transformation diagram, what would be the phases present for a 1.13 wt. % C steel with no alloying elements. calculate the amount of pro eutectoid product, where applicable (at the bottom)  A) quenched in cold water to 650 C in 0.1 seconds, then held at 650 C for 5 seconds, then quenched to 400 C, held at 400C for 60 seconds, and finally quenched to room temperature B. Necessary Steel Phase Diagram Calculations to determine the amount of pro eutectoid product: