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Due to random selection of questions from the test bank, your quiz only covers part of the concepts from Chapter 13. What is one question you wish you would have been asked on this quiz? Provide the question and give the answer for one point of extra credit.

Please use the iron (Fe) – carbon (C) phase diagram provided below or in the handout to answer the next 14 questions.

For an alloy with eutectoid composition, which of the following is the main characteristic of the microstructure at the eutectoid temperature?

At what temperature does the liquid phase in the copper-nickel phase diagram become completely solid for a 60% copper and 40% nickel composition during cooling?

Grace was born in Korea but was adopted by White parents in the US when she was six. She doesn’t remember much from when she lived in Korea, but has recently started exploring what it means to her to be Korean and American. She plans to take a gap year before college to live in Korea. Grace is exploring her ______. 

A copper-nickel alloy of composition 60 wt% Ni-40 wt% Cu is slowly heated from 1200°C (2192°F), what will be the composition of the last solid phase remaining just before the alloy completely melts?

A 90 wt% Pb–10 wt% Sn alloy is heated to 250°C (480°F); at this temperature it is entirely an

What is the weight fraction of the liquid phase for a 55 wt% Ag – 45 wt% Cu alloy at 900°C?

For a Cu-Ni alloy with a composition of 63.8 wt% Ni and 36.2 wt% Cu at 1250°C, what is the composition of

For a lead (Pb) – tin (Sn) alloy with a composition of 25 wt% Sn and 75 wt% Pb, select the phase(s) present and their composition(s) at 200°C from the following choices.