In the region indicated with arrows in the phase diagram shown below (above the upper line), which of the following statements are true: 1300 - L (liquid) T(°C) 1200 20 30 ↑ 40 wt% Ni liquidus solidus α (solid) 50 Select one or more: a. The proportion of alpha phase increases going from right to left at a fixed temperature. O b. There are solid grains mixed with a liquid phase Oc. There is no solid fraction in the material Od. The proportion of "L" phase increases going from right to left at a fixed temperature O e. The composition of the phase is pure liquid

b) Figure 1 shows a phase diagram for Cu-Ni binary system. Make a phase analysis of this system at point Q. T.°C 1450 1250 1050 0 20 40 60 80 100

The point in the phase diagram where the fusion curve, the vapor pressure curve, and the sublimation curve join is called the Question 4 options:   melting point.   critical point.   double point.   boiling point.   triple point.   A sample of an ideal gas is slowly compressed to one-half its original volume with no change in temperature. What happens to the average speed of the molecules in the sample? Question 5 options:   It doubles.   It halves.   cannot be determined without more information.   It quadruples.   It does not change.     Phase changes occur Question 6 options:   as the temperature decreases.   all of the above.   none of the above.   as the temperature remains the same.   as…

Should correct

1000 grams of steel containing 1.5 weight percent carbon is heated to complete melting.  After equilibrium is achieved, we slowly cool the alloy. At 720C we keep the alloy to maintain equilibrium.  Determine the amounts of the following, in grams. Pearlite Proeutectoid phase Total cementite