HW1 Soil

Figure 1 show Eutectoid Plain Carbon Steel Phase Diagram. Please indicate the phases present and their corresponding weight fraction at points a, b, c and d. Show your tie-line and calculations based on Lever Rules. Temperature (°C) 1100 900 700 500 300 100 0 100% Fe 7 0.02 1.0 Fe,C 1.2 2.0 7 7 7 7 Fe, C Figure 1 Fe,C Pearlite 4.0 3.0 Weight percent carbon 7+ Fe, C 727°C a + Fe₂C 5.0 Fe, C 6.0 6.7

Compare the Cu-Ni binary phase diagram with the Al2O3-Cr2O3 binary phase diagram. Why are they so similar? HINT: Review the Hume-Rothery rules.

Please answer material science question.

Given the Cu-Zn phase diagram below, determine the amount of the phase/s present of a 75 wt% Zn -25 wt% Cu alloy for the following temperatures. Indicate the required composition for each temperature in the diagram. Round off your final answers up to two decimal places. Show your solutions completely and neatly and follow the table format below, Temperature Phase/s present Phase composition Relative amount 600 °C 570 °C y+ L 700 1200 8+L L 600 P 598°C 560°C 570 |1000 e + L y +e 500 60 68.6 70 74.3 75 78.2 80 90 Composition (wt % Zn) Temperature (°C) ta Temperature (°F)

Design of a Melting Procedure for a Casting You need to produce a M=1000 kg Cu-Ni alloy having minimum yield strength of Sy = 20,000 psi, a minimum tensile strength of Sut = 60, 000 psi, and a minimum % elongation of 20%. %3D You have in your inventory a Cu-20% Ni alloy and pure 1500 1400 1300 1200 nickel. 1100 1000 Design a method for producing castings having the required properties. 80,000 80 Tensile strength Cu strengthens Ni 60,000 60 40,000 40 Ni strengthens Cu % Elongation 20.000 20 Yield strength 20 40 80 Weight percent nickel 60 Ni Strength (psi) Temperature ('C) &Elongation

Name: Question #2: Consider the following questions based on the binary phase diagram for copper and zinc: trom 1064.6 1000 37.5 32.5 002 38.8 834 C 58.5 800 60.8 700°C 00.8 80.3 700 876.5 B8.2 600 (Cu) 70.6 1741 660°C 78.6 500 38.95 454C 46.5 468°C n 57.7 48.9 G8.3 425°C 9720 88.3 419.58 C 400 (Zn) 300 200 100 60 70 80 100 50 06 10 20 30 40 Zn Cu Weight Percent Zinc a. [8 pts] Name the phase or phases present in this brass alloy with the composition and temperature shown by the "X" on the phase diagram (60% Cu, 40% Zn, 600 °C). Temperature °C li

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QUESTION (B) please

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View Policies Current Attempt in Progress The kinetics of some phase transformations obey the Avrami relationship. Using the fraction transformed-time data given below, determine the total time required for the transformation to go to 96% completion. Fraction transformed Time (s) 0.2 11.7 0.9 27.6 S eTextbook and Media GO Tutorial

Temperature (°C) 700 600 0 500 400 300 0 (AI) a 5 a+L 10 Composition (at% Cu) 10 20 a +0 L 30 Composition (wt% Cu) 20 0+ L 0 (CuAl₂) 40 30 50 1200 1000 800 600 Temperature (°F) a) For the alloy represented by the phase diagram above, what is the wt% content of eutectic if an alloy of 2.5 wt% Cu is cooled very slowly from the molten state to 300°C? b) What phases are present in 2.5 wt% Cu material if it is quenched from 550°C?

Please do not copy/repost previous diagrams from chemistry Q&A.  Either place path drawing on or use same EXACT axis labeling as the diagram.

35. (SI units) Zinc has a density of 7.15 g/cm3 at room temperature (20°C). Determine its density at 410°C, using data in Table 4.1 of the book for reference (Hint: Assume a 1 cm3 cube, 1 cm on each side). Round to the nearest thousandth of a g/cm3.

help pls A two-phase phase diagram is shown. Answer the following questions t -1300 1500+ Temperature 1100 0 34 54! 166 482 80 Composition of Ni % 20 What is the composition (in % Cu) of the solid phase corresponding to the red dot in between the solidus and liquidus lines in the phase diagram? Just write the number. Do not write the % symbol. Question 17 2.33 100 An alloy is being made with 66% Ni and 34% Cu. When it is cooled from 1500°C to the temperature corresponding to the red dot in the phase diagram, how many kg of liquid is present in the mixture?

A substance exists in two solid modifications alpha and beta and also as liquid and vapour at a pressure of 1 atm alpha melts at a lower temperature to form liquid. Also alpha is denser than the liquid but beta is less dense than the liquid assuming that no meta stable equilibria are observed sketch p-t phase diagram show the significance of each point,line and region also show all triple points.

Use the Cu-Ag Phase Diagram below to answer the following questions Composition (at% Ag) 20 40 60 80 100 2200 1200 A 2000 Liquidus 1000 Liquid 1800 Solidus C F a +L 1600 * 800 779 C (T) B+L E G 91.2 (Ceg 8.0 71.9 1400 (Cg). 1200 600 Solvus 1000 a +B 800 400 600 200 o 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) Temperature ("C) Temperature ("F)

100 atm 1 atm 0.118 atm 114 °C 184 °C 535 °C Temperature (not to scale) a.) Use the above generic phase diagram, clearly identify where you would find the following: Gas, Liquid, Solid, Triple Point, Draw arrows and label to indicate the six transitions (melting, freezing, sublimation, deposition, vaporization and condensation) b.) Based on the above phase diagram, what phase would you be in at a pressure of 50 atm and 300°C? c.) Based on the above phase diagram at what temperature in °C would vaporization occur under normal conditions? d.) If the pressure was 0.050 atm and 425°C, what phase would you be in? e.) If the pressure was 0.118 atm and temperature was 114°C, what phase(s) would you be in? f.) At approximately what temperature would the normal freezing point be in °C? g.) If the pressure was 0.105 atm and starting at a temperature of 32°C to 450°C what phase changes would occur (put in increasing temperature order). Pressure (not to scale)

Considering the phase diagram below, which composition would you chose if you were to design an alloy for casting, motivate your answer.