The following is a hypothetical binary phase diagram with various temperatures highlighted as (T) where n corresponds to a numeric value. Use the diagram to L T2 answer the following questions: 1. How many solid phases are there in the T4 diagram? Ans.: 2. Identify the melting point of A & B? Ans: m, is & mg is T7 3. How many invariant points are there? Write To the reactions. Tu A WB Temperature

The following is a hypothetical binary phase diagram with various temperatures highlighted as (T) where n corresponds to a numeric value. Use the diagram to L T2 answer the following questions: 1. How many solid phases are there in the T4 diagram? Ans.: 2. Identify the melting point of A & B? Ans: m, is & mg is T7 3. How many invariant points are there? Write To the reactions. Tu A WB Temperature

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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Shown to the right is the solid-liquid phase behavior for mixtures of component A and component B at 1 atm. Use the phase diagram to answer the following questions. a) Specify the melting point of substance B at 1 atm b) What is the maximum composition (mole fraction) of component B that is possible for the mixture to exist in phase S2? At what temperature does this occur? c) 20mol of component A and 180mol of component B are mixed at 350°C and 1 atm. The mixture is cooled at constant pressure to 200°C. i) What phases are present at the final state? ii) What is the composition of each phase at the final state? iii) What is the number of moles of each phase at the final state?
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Material science The figure given below shows the Pb-Sn binary phase diagram. a) Cite the phases present, their compositions and and calculate the relative amounts (in terms of mass fractions) of the phases for the alloy 75 wt. % Sn at temperatures of 175°C (A) and 250°C (B), respectively.
Consider Al- Cu system below. When Al-40%Cu is heated above 600°C and cooled slowly to a temperature of 545°C . Answer the following. Use the values of composition given in the phase diagram , no estimation .Each has two marks. 700 1200 600 L a + L 6 +L 548 1000 500 (CUAL) a + 6 800 400 600 300 5.65 10 20 30 32.7 40 50 52.5 (AI) Composition (wt % Cu) a. Percentage of the pro-eutectic phase present (% no decimal places) b. Composition of the pro- eutectic phase present (in %Cu one decimal place) c. What is the percentage of larger eutectic component present (% no decimal places) Temperature (°C) Temperature (°F)
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For two hypotetical materials which have limitless solubility for both in the “liquid” and “solid” states in each other, the following data are listed. Melting Temperatures of material A and B are Tm,A and Tm,B respectively, Liquidus and Solidus curves are circular arcs. a- Draw the related “Phase Diagram” of Material A and Material B showing the data given and calculated. b- Calculate/Determine the compositions of phases at T2 , explain the procedure. c- Calculate/Determine the “percentages” of “phases” of Alloy,2 at T2 , explain the procedure. Given: -Tm,A, Celcius =300 -Tm,B, Celcius =800 -T1, Celcius =600 -B percentage of Liquid phase at T1 =25 -B percentage of Solid phase at T1 =70 -B percentage of Alloy 2. =50 -T2, Celcius =650 -B percentage of Liquid phase of Alloy 2 at T2 = to be calculated -B percentage of Solid phase of Alloy 2 at T2 = to be calculated
Answer part (iv) and (v)
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Use the first image to solve two part question
4. For the A-B alloy the phase diagram below, use the lever rule to find the amount of liquid and solid states and their compositions at Temperature T. Let Cx = 25%B, C =40%B, Cy = 60 %B Complete solubility of two metals in liquid and solid states (Ni -Cu ,Sb - Bi) TA M EM T EMa T Cy A B Concentration of B in A www.substoch com Temperature
Question One (Compulsory) Composition (atk Sn) 100 20 40 60 80 327C B00 300 Liquid 500 232C 400 200 183C 07.8 18.3 61.9 300 100- H200 100 BO 100 20 40 60 Pb) Compesition (wt% Sn) Figure 1: Lead -tin phase diagram Figure I above shows a lead-tin (alloy) phase diagram. Consider an alloy composition of 55 wt% Sn - 45 wt% Pb. Answer the following questions: (i) Name the phases present and their compositions in the alloy at 150°C. (ii) Describe the structural and composition changes in the alloy when it is cooled from 190°C to 20°C. (iii) What are the compositions of phases at the eutectic point and why is this point important for the alloy? (iv) Given that the average density of a phase is determined as Pa = 100 ,calculate the PA PB volume fractions of the phases at the given compositions and at 150°C. Take the densities of lead and tin as 11.34 g/cm' and 7.36 g/cm' while the mass fraction of a is 0.21. (v) Name and describe four industrial applications of lead-tin alloys. ta aroundu (3.)…