What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite are 0.90 and 0.1, respectively? See Animated Figure 9.24 Part 1 What are the concentrations of carbon in a-ferrite and FegC at a temperature just below 727°C? You may want to use Animated Figure 9.24. (a) Ca = i wt% (b) CFe,C i wt% Attempts: 0 of 3 used Submit Answer Save for Later Part 2 Compute the composition of an iron-carbon alloy for which the mass fractions of total ferrite and total cementite are 0.90 and 0.1, respectively. Co wt% C

What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite are 0.90 and 0.1, respectively? See Animated Figure 9.24 Part 1 What are the concentrations of carbon in a-ferrite and FegC at a temperature just below 727°C? You may want to use Animated Figure 9.24. (a) Ca = i wt% (b) CFe,C i wt% Attempts: 0 of 3 used Submit Answer Save for Later Part 2 Compute the composition of an iron-carbon alloy for which the mass fractions of total ferrite and total cementite are 0.90 and 0.1, respectively. Co wt% C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Draw thermal equilibrium diagram for the binary alloy system (Si-Au), from the following data:- a- Silicon melts at 1414 °C, and gold melts at 1064 °C. b-Eutectic is formed at 360°C containing 20 Wt% Si -80 Wt% Au, and identify all phases are present in the diagram c-Determine the amount of each phase for the alloy which consist of 60 Wt% Si- 40Wt % Au at 1200 °C and 800 °C ,then determine the amount of eutectic at 200 °C?
What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite are 0.92 and 0.08, respectively?
A hypo-eutectoid steel sample has a mass of 538kg and a nominal carbon content of 0.57%. Sketch the microstructure of the steel sample. Also, determining the weight percentage, Wt%, and weight, of Pearlite and Pro- eutectoid ferrite that are the sample. Clearly show all equations used and calculations. Use Figure 2 as a guide.
Question 2: For the given Fe-C phase duagram (a) Compute the mass fractions of a ferrite and cementite in pearlite. (b) Compute the mass fraction of eutectoid ferrite in an iron-carbon alloy that contains 0.43 wt% C. (c) The mass fractions of total ferrite and total cementite in an iron-carbon alloy are 0.88 and 0.12, respectively. Is this a hypoeutectoid or hypereutectoid alloy? Why? Temperature (°C) 1600 1400 1200 1000 800 600 400 1538°C (Fe) 912°C M+R -1493°C 1394°C 7. Austenite 0.76 0.022 a, Ferrite y+L 2 2.14 Composition (at% C) 15 10 1147°C a + FezC L 3 Composition (wt% C) 4.30 Y+Fe3C 727°C 20 Cementite (Fe3C). 25 2500 2000 1500 1000 6.70 Temperature (°F)
Refer to Figure 1 showing the phase diagram for the Fe-Fe3C system. Consider 1.0 kg of austenite containing 1.15 wt% C, cooled to below 727 C (1341 F). What is the proeutectoid phase? How many kilograms each of total ferrite and cementite form? How many kilograms each of pearlite and the proeutectoid phase form? Schematically sketch and label the resulting microstructure.
For an alloy containing 20 wt % Ag, refer to the Cu-Ag phase diagram given in the Figure: What is the melting point of Cu in °C? What are the relative amounts(in %) of the existing phases at 900°C? Define the Eutectic point in terms of °C and the composition % of Ag.
Cite the phases that are present and the phase compositions for the following alloys: 85 wt% Ag–15 wt% Cu at 800°C
Q1 / Two metals Beryllium (Be) and Silicon (Si) have melting points 1282°C and 1414 °C respectively, are completely soluble as liquids but completely insoluble as solids . They form a eutectic at 1090°C containing 61 wt% Si -39wt% Be? Determine the following:- 1- Draw the thermal equilibrium phase diagram and identify all phases are present in diagram ,then sketches what happens in microstructure when the alloys containing , a- 10wt% Si, b-70wt%Si , solidify completely. 2- Determine the composition and the amount of each phase for the alloy which contain 15 wt% Si-85wt% Be at 1150°C If the alloy is hypoeutectic determine the amount of eutectic at 600 °C? or hypereutectic and
2) Referring to the aluminum-silicon phase diagrams as shown below, Answer the questions. What is the maximum amount of primary a phase in an Al-Si alloy containing 85 wt.% ) How much is eutectic ß (silicon) in this alloy at 575°C? ( microstructure of the alloy containing 20% silicon at 500°C. aluminum? ( Sketch the Temperature (°C) 760 700- 650- 600 550- 500 660°C 0 a-Al+Liquid 577°C 1.65 wt% Si Liquid 5 Eutectic Point 12.6 wt% Si 1 1 1 I Al+SI Eutectic Hyporeutectic (<12.65i) Hypereutectic (12.6Si) 10 15 + Si+Liquid Silicon (wt%) 20 Temperature (°C) 1500 1000 a. 500 0 a+L 1.65 12.6 0 Al 20 L 577° a+ß B+L 40 60 Weight percent Silicon 80 99.83 100 Si
Problem 4 A 50 wt% Ni-50 wt% Cu alloy is slowly cooled from 1400°C (2550°F) to 1200°C (2190°F). (a) At what temperature does the first solid phase form? (b) What is the composition of this solid phase? (c) At what temperature does the liquid solidify? (d) What is the composition of this last remaining liquid phase?
Cite the phases that are present and the phase compositions for the following alloys: 15 wt% Sn–85 wt% Pb at 100°C
A magnesium-lead alloy of mass 7.5 kg consists of a solid a phase that has a composition just slightly below the solubility limit at 300°C (570°F). (a) What mass of lead is in the alloy? (b) If the alloy is heated to 400°C (750°F), how much more lead may be dissolved in the a phase without exceeding the solubility limit of this phase?