 # Japan

Satisfactory Essays
272 Words Grammar Plagiarism  Writing  Score Japan Assignment # 5
Q.1a) On the "blank" phase diagram below, label each of the regions with the phase or phases that are in equilibrium there.

b) How many eutectic points are there in the Cu-P phase diagram? ______ How many eutectoid points? ______ How many peritectics? ______ How many peritectoids? ______ How many pure metal phase transitions? ______ How many congruent melting points??______

Q.2 a) A 90 wt% Ag-10 wt% Cu alloy is heated to a temperature within the b + liquid phase region. If the Composition of the liquid phase is 85 wt% Ag, determine: (a) The temperature of the alloy (b) The composition of the b phase

(c) The mass fractions of both phases b) For a copper-silver alloy of composition 25 wt% Ag-75 wt% Cu and at 775°C (1425°F) do the following: (a) Determine the mass fractions of α and β phases. (b) Determine the mass fractions of primary α and eutectic microconstituents. (c) Determine the mass fraction of eutectic α.

Q.3 For some transformation having kinetics that obeys the Avrami equation. the parameter n is known to have a value of 1.7. If, after 100 s, the reaction is 50% complete, how long (total time)

will it take the transformation to go to 99% completion? The kinetics of the austenite-to-pearlite transformation obeys the Avrami relationship. Using the fraction transformed–time data given below, determine the total time required for 95% of the austenite to transform to pearlite:

Q.4 Write down six invariant Binary reactions by showing schematically and with examples

Due date: 22 October, 2012

## You May Also Find These Documents Helpful

• Satisfactory Essays

3. A beaker containing 100 ml of water is heated at a constant rate for 10 minutes. The temperature of the liquid is…

• 692 Words
• 3 Pages
Satisfactory Essays
• Good Essays

B. How would you determine the melting of a substance whose melting point is higher than…

• 384 Words
• 2 Pages
Good Essays
• Satisfactory Essays

For #1 theres a specific heat of 0.864 J / (g × °C) and that is closest to the specific heat of aluminum. So, for this experiment, let's call your metal aluminum.…

• 587 Words
• 3 Pages
Satisfactory Essays
• Satisfactory Essays

3. Draw a set of axes and label one of them "Solubility” and the other "Temperature."…

• 372 Words
• 2 Pages
Satisfactory Essays
• Satisfactory Essays

2. What is the significant difference in the amount of heat (in Joules) absorbed by the eutectic alloy at different time intervals?…

• 361 Words
• 2 Pages
Satisfactory Essays
• Satisfactory Essays

PURPOSE: During this lab, you will investigate several questions about density. 1) What are the densities of metals A and B? 2) Does the density of a piece of metal depend on its size? 3) According to percent error calculations, which of the methods of determining density is the most accurate? 4) Can you identify the metals by their densities?…

• 612 Words
• 3 Pages
Satisfactory Essays
• Satisfactory Essays

2. As a solid, a particular element has a heat capacity of 0.19 J/goC. When 3600 J of energy of heat is added to 18.0 g of the element initially at 0oC, it is still a solid. Its melting point is at least…

• 1407 Words
• 6 Pages
Satisfactory Essays
• Satisfactory Essays

(); (c) There is a 1.25-kg cementite (Fe3C); (d) The alloy is in a three-phase field of …

• 798 Words
• 4 Pages
Satisfactory Essays
• Satisfactory Essays

What is the mass of 0.75 moles of CuSO4 ? 9. How many atoms does 2.0 moles of He represent? 10. How many sodium ions are in 3.0 moles of NaCl?…

• 274 Words
• 2 Pages
Satisfactory Essays
• Good Essays

A 20 kg of aluminum block initially at 80oC is dropped into an insulated tank that contains 120 liters of water at 25oC. Determine the final equilibrium temperature and the total entropy change for this process.…

• 613 Words
• 3 Pages
Good Essays
• Good Essays

2) If there is an Impurity present in a sample, what is the effect on the melting point?…

• 620 Words
• 3 Pages
Good Essays
• Good Essays

To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties)…

• 598 Words
• 3 Pages
Good Essays
• Good Essays

Japanese festivals are traditional festive occasions. Some festivals have their roots in Chinese festivals but have undergone dramatic changes as they mixed with local customs. Some are so different that they do not even remotely resemble the original festival despite sharing the same name and date. There are also various local festivals that are mostly unknown outside a given prefecture. It is commonly said that you will always find a festival somewhere in Japan.…

• 626 Words
• 3 Pages
Good Essays
• Powerful Essays

1734185317500Japan’s largest import in the 1870’s was raw cotton. It’s price fell 45 percent. Japan’s largest export in the 1870s was raw silk. Its price rose 50%.…

• 1066 Words
• 4 Pages
Powerful Essays
• Good Essays

The purpose of this lab is to obtain the cooling curves for tin, lead and various alloys of these two metals. A phase diagram will be generated from these cooling curves. When a material is heated by adding energy at a constant rate, the temperature of the material will increase linearly with time, provided a phase transformation does not occur. As temperature of the sample becomes greater than the temperature of the surroundings, the surroundings will also lose heat(energy). This heat loss depends on the temperature difference between the sample and the surroundings, and results in a decrease in the net rate that energy is added to the sample and a slight convexity in the heating curve.…

• 651 Words
• 3 Pages
Good Essays