I need the solution of this question please please please quicklyThanks Heating 0.50% C steel to 815 OCwith sufficient holding time will leadtoall of the carbon atoms will dissolve inthe interstices of the FCC crystalsall of the carbon atoms will dissolve inthe interstices of the BCC crystalssome of the carbon atoms will dissolvein the interstices of the FCC crystalsO none of them

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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

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A 609 g eutectoid steel ( about 0.8%C) is heated to 1,002 C and cooled slowly through the eutectorid temperature. This results in the formation of cementite Fe3C (6.67%C) and ferrite (0.025%C). Calculate the number of grams of cementite that form in the steel.
An alloy of 30 wt % Pb and 70 wt % Sn is slowly cooled from 250°C to 27°C: d) What is the amount and composition of each phase that is present at 183°C - ∆T ? e) What are the amounts of each phase present at room temperature? f) Draw the microstructure 183°C + ∆T and 183°C - ∆T in 2 cm diameter circle.
A 80%Sn-20%Pb alloy is melted fully at 300°C and then slowly cooled down to 182°C. Sketch the microstructures at 300°C, 200°C, and 182°C, respectively. Label all phases and indicate their approximate compositions. Also, determine the follows for this alloy at 182°C. (1) The weight fractions of α and β phases.(2) The weight fractions of primary β and eutectic structure.(3) The weight fraction of eutectic β .
A 50%Ni-50%Cu alloy is slowly cooled from 1400°C to 1200°C. Determine (1) At what temperature does the first solid phase form andwhat is the solid’s composition?(2) At what temperature does all liquid solidify and what is thelast remaining liquid’s composition?(3) At 1300°C, estimate the compositions of the solid andliquid.(4) At 1300°C, estimate the weight fractions of the solid andliquid.
Iron (Fe) undergoes an allotropic transformation at 912°C: upon heating from a BCC [ alpha phase) to a FCC (gamma phase). Accompanying thistransformation is a change in the atomic radius of Fe from R bcc= 0.12584 nm to R fcc= 0.12394 nm and, in addition, a change in density.Compute the percentage volume change per atom (Vﬁnal |-V initial |)/ (V; initial |) associated with this reaction . Indicate whetherthere is an expansion or zontraction taking place during the process
Please do it as early as possible. Name the microstructural products of a eutectoid iron-carbon alloy (0.76 wt% C ) that is first completely transformed to austenite and then cooled to room temperature at a rate of 1000 °C/s
A 50 wt% Pb–50 wt% Mg alloy is slowly cooled from 700°C to 400°C. (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?
A Cu-Ni alloy must be fully liquid at 1350°C for processing. However,when placed in service the alloy must be solid at 1200°C. The phasediagram for the Cu-Ni binary system given below in Figure 3b.(i) Determine the composition range in which the alloy must lie.(ii) To obtain the maximum yield strength what composition shouldbe used?(iii) If, however, the highest elongation is required then whatcomposition should be used?
find the relative amounts (in terms of mass fractions) of the phases for the following alloys and temperature: 90 wt% Zn-10 wt% Cu at 400°C.
Cite the phases that are present and the phase compositions for the following alloys: 85 wt% Ag–15 wt% Cu at 800°C
Determine the Miller- Bravais indices
Referring to Figure 1, answer the following: What are the liquidus and solidus temperatures for an 80%Pb20%Tl alloy? What is the composition of the solid solution phase for the aforementioned alloy once we hit the liquidus temperature upon cooling? For the same alloy above, use the inverse lever rule to calculate the %solid and %liquid at 325C

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