For the Cu-Ni phase diagram below, what fraction of the system is liquid for 50 wt% Ni at 1300C

What is the nature of the microstructure, in terms of microconstituents present in a specimen with 1.12 wt% C when the specimen is rapidly cooled from 920°C to 600°C, held for 1 second, then cooled to 400°C, held for 200 seconds and quenched to room temperature?

The parent of a toddler is concerned the child swallowed something. Which item, if swallowed, would warrant immediate intervention?

Referring to the phase diagram below, what is the solubility limit of C in gamma iron

For cooling of an alloy that is 10wt% Sn – 90wt% Pb from 400 C to room temperature, what is the order of phases that you would expect to see?    

What is the composition of the phase(s) present at 1200C for 25 wt% Ni alloy? Refer to the Cu-Ni phase diagram below.

Relative to the direction of an applied shear stress, the direction of motion of an edge dislocation’s line is

Which phase(s) are present and what is the composition of the phase(s) at point H?

What is the maximum solubility of Pb in Sn?

Consider 2.5 kg of austenite containing 0.65 wt% C, cooled to below 727˚C.  What is the proeutectoid phase?