Cite the phases that are present and the phase compositions for the following alloys: 15 wt% Sn–85 wt% Pb at 100°C
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Cite the phases that are present and the phase compositions for the following alloys:
15 wt% Sn–85 wt% Pb at 100°C
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- Approximately how many degrees wide is the transition range at the 0.1 carbon alloy?Cite the phases that are present and the phase compositions for the following alloys: 85 wt% Ag–15 wt% Cu at 800°CCite the phases that are present and the phase compositions for the following alloys: 1.25 kg Sn and 14 kg Pb at 200°C
- 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.List the phase(s) that are present, the phase composition(s) and the weight fractions of the phase(s) for each of the following alloys:(a) 70 wt% Zn-30 wt% Cu at 300 C (b) 90 wt% Pb-10 wt% Sn at 325 C (c) 2.5 kg Cu and 5.0 kg Ag at 900 C (d) 37 lbm Pb and 6.5 lbm Mg at 500 CWhat kinds of dispersion hardened alloys can retain their strength up to 1000 ° C?
- You are assured that a Pb-98.5%Sn alloy is good for a treatment of Aging, if we take that information as correct, will it be possible that an alloy Is Pb-10%Sn also very good for that treatment? Justify your answer.Copper-Nickel alloy is widely applied in industry. (a) List at least three applications where Cu-Ni alloy is used; (b) How many components and phases are shown in the below phase diagram? (c) For a mixture of 40 wt% Cu and 60 wt% Ni at 1320 oC, what phases are present? Identify theamount of these phases by applying “lever rule”.When alloys A, B, and C are gently cooled from 1000 o C in the following temperature ranges, sketch their microstructures. (equilibrium cooling). List every phase present in the microstructures. Comment on the constituent phases of the resulting alloy and its mechanical characteristics. Please keep it brief.
- Briefly describe how precipitation hardening happens in Al alloys (how the microstructure evolves as annealing time increases). Why it first forms q” then q’ before q is finally formed? How does the alloy’s strength change during this process? What are the strengthening mechanisms?For an Fe-0.35% C alloy, determine the composition and amount of each phase present at 726 ° C; and the composition and amount of each microconstituent present at 726 °C.These questions are based on a high carbon stell with a composition of 1.5%C and 98.5%Fe 1)Name the phases present and calculate the amounts of these phases just above the eutectoid temperature. 2)With equilibrium cooling just below the eutectoid temperature calculate the total ferrite.