hh
Used lever rule to calculate phases at B&C. In B, we will apply lever rule till the boundary of liquid phase & Fe2Ti phase whereas in the second case we use till the boundary of Fe & Fe2Ti.
At same chemical composition phase composition remain the same till it reaches the boundary temperature
D1. Here is a Fe-Ti phase diagram. The Eutectic temperature is 1289 °C. Suppose that you...
The phase diagram for the iron-carbon Fe-C system is shown below. use it to answer the following questions a) How many different solid allotropes (phases) does pure iron have? b) what is the maximum carbon solubility of carbon in austentite? c) what is the maximum carbon solubility of carbon in ferrite? d)On cooling the following phase reaction occurs at 0.76% C and 727*c y--> alpha + Fe3C. On cooling what phase reaction occurs at .16% C and 1493*c? e)For a...
Consider the Fe-Fe3C phase diagram and answer the following questions: 21. At a temperature just below the eutectic (1147°C) for a sample with 4 wt% C please calculate the mass fraction of (a) primary Y (austenite), (b) eutectic y (austenite), and for a sample with 5 wt% C please calculate the mass fraction of (c) primary Fe,c (cementite), (d) eutectic Fe C (cementite). (8%) 22. At a temperature just up the eutectic (1147°C), at first for a sample with 4...
In the diagram below, what is the eutectic temperature and what is the eutectoid temperature of steel? A. eutectic temperature: 1539°C, eutectoid temperature: 723°C. B. eutectic temperature: 723°C, eutectoid temperature: 1539°C. C. eutectic temperature: 723°C, eutectoid temperature: 1130°C. D. eutectic temperature: 1130°C, eutectoid temperature: 723°C. In the diagram below, what is the eutectic composition and what is the eutectoid composition of steel? A. eutectic composition: 4.3 wt% C, eutectoid composition: 0.83 wt% C. B. eutectic composition: 0.83 wt% C, eutectoid...
5. Three steels with a composition of Fe-0.2 wt.% C, Fe-0.76 wt.% C and Fe-1.1 wt.% C are produced by melting and slowly cooling down to room temperature. By referring the phase diagram provided in figure 3, what would you expect in terms of phase changes (solidification sequence) in all three alloys as the temperature of the alloys reduces from melting temperature to room temperature? What will be the approximate weight fraction of each of those micro constituents at room...
2. [25 points] The following figure shows the phase diagram of Cu-Ag alloy system. A mixture of Ag and Cu with a eutectic composition (or concentration) is heated to a high temperature and keep for enough time to prepare the material into a uniform liquid state. The material is then cooled down to 800°c. Cu-Ag System 1200 Liquid 800 A 600 400 100 80 60 40 20 wt% Ag a) What is the Ag composition in the original material so...
14) 4. Using the attached iron-iron carbide phase diagram, answer the following: a) Upon slow cooling a 1.0 wt% carbon steel from 900°C: i) At what temperature does the carbide phase appear? ii) How much carbide is present at 729°C? iii) How much carbide is present at 725°C? b) Upon slow cooling a 0.5 wt% carbon steel from 900°C to 725°C: i) What are the compositions and quantities of the two phases present? ii) What are the compositions and quantities...
3. For the Fe-C diagram answer the following ...(11 points) a) Give the common name for the following phases - a, y, FezC...(1 point) b) Assume each of the given compositions has been slowly cooled under equilibrium conditions to 700°C. Draw the microstructure of each, taking care to annotate drawings fully, including identification of phases, microconstituents, and features. Also list each phase composition............(6 points) 100.0% Fe 0.2%C, 99.8%Fe 0.6%C, 99.4%Fe 0.76%C, 99.24%Fe () (0) () (0) c) For a composition...
8. For the Fe-C diagram answer the following a) Give the common name for the following phases - a, Y, FeC b) Assume each of the given compositions has been slowly cooled under equilibrium conditions to 700°C. Draw the microstructure of each, taking care to annotate drawings fully, including identification of phases, microconstituents, and features. Also list each phase composition...... (6 points) 100.0% Fe 0.2%C, 99.8%Fe 0.6%C, 99.4%Fe 0.76%C, 99.24%Fe () () () c) For a composition of 1 wt%...
6. Consider the Ti-Ni system in the figure below. Atomic Percent Nickel 20 I800 1600 L 1450C 1400 200 TIN (Ni) 1000 Un) re s00 Hati) s00 Ti Weight Percent Nickel N a. What are the melting temperatures of pure Ni and pure Ti? b. Label the liquidus and solidus lines in the figure. c. Label al field containing two phases in the figure. d. What is the maximum solubility of Ni in a-Ti and Ti in Ni? e. Write...
Consider the hypothetical eutectic phase diagram for metals A and B, which is similar to that for the lead-tin system, (shown in the figure below.) Assume that (1) O and S phases exist at the A and B extremities of the phase diagram, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B, and (3) the composition of the phase at the eutectic temperature is 88 wt% A-12 wt% B. Determine the composition of an alloy that will yield...