A 35 wt% Pb-65 wt% Mg alloy is heated to a temperature within the a + liquid phase region shown in Animated Figure 9.20. If the composition of the a phase is 20 wt% Pb, determine (a) The temperature of the alloy °℃ (b) The composition of the liquid phase i %wt Pb (c) The mass fraction of the a phase i (d) The mass fraction of the liquid phase

A 35 wt% Pb-65 wt% Mg alloy is heated to a temperature within the a + liquid phase region shown in Animated Figure 9.20. If the composition of the a phase is 20 wt% Pb, determine (a) The temperature of the alloy °℃ (b) The composition of the liquid phase i %wt Pb (c) The mass fraction of the a phase i (d) The mass fraction of the liquid phase

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

The Iron-Carbon system: Phase Diagram 1. You heat treated a 1045 steel plate by heating it to 900°C and slowly cooling it to 725 °C, which is below the eutectoid temperature. What phases are present at 725°C? What are the compositions of each phase at 725°C? What are the weight fractions of each phase at 725°C? What microconstituents are present at 725°C? What are the compositions of each microconstituent at 725°C? What are the weight fractions of each microconstituent at 725°C?
1 Al-Li Aerospace Alloys When a small amount of Li is added into Al to create an Al-Li alloy, the two elements typically do not mix homogeneously. Instead, most of the material is nearly-pure Al, while some small regions are Li-rich.¹ (These small regions are called precipitates and they are responsible for giving Al-Li alloys much better properties for aerospace applications relative to pure Al. We'll learn more about the alloying process and about precipitates later in the course.) The Li-rich regions have the chemical formula Al3Li and belong to the cubic crystal system.² In the unit cell, the Li atoms are located at 000, while the Al atoms are located at 110, 101, and 01121. (a) Draw the unit cell of Al3Li. (b) Which of the crystal structures from Callister Chapter 3 does this resemble? Why do we not call it that structure? (c) Given that the lattice parameter is 0.401 nm, what is the density of Al3Li?
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 C
A NIO-20 mol % Mgo ceramic is allowed to solidify. (See the figure below.) Temperature (°C) 2800 2600 2400- 2200 2000 L (Ni, Mg)0 40 60 80 MgO Mole percent MgO NIO 20 (a) Determine the composition (in mol% MgO) of the first solid to form. 80 x (b) Determine the composition (in mol% MgO) of the last liquid to solidify under equilibrium conditions. 35 X%
Determine the composition and fraction with 50% Ni and 1300 ° C
The mass fraction of eutectoid cementite in a hypoeutectoid iron-carbon alloy (just below its eutectoid temperature) is 0.100. On the basis of this information, determine the composition of the alloy. If it is not possible to determine the composition from the information provided, enter 0. 0.7365 wt% C
According to the following graph, two samples of 1080 steel are cooled from the eutectoid temperature, one at a cooling rate of 250°C/s and the other at a cooling rate of 7.27x10-8 °C/s. Specify the phases obtained and explain their formation from thermodynamic and kinetic perspectives. Also, briefly describe their formation. Draw the microstructure of the phases obtained. Sıcaklık (C) 800 700 600 500 400 300 200 100 0 10 1 T M(başlama) M(% 50) M(% 90) 10 M+O -Otektoid Sıcaklık 10² Zaman (s) % 50 10³ 104 105
A 50 wt% Pb-50 wt% Mg alloy is slowly cooled from 700 °C (1290 °F) to 400 °C (750 °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? Temperature (°C) 700 600 500 400 300 200 100 2 0 0 (Mg) 560°C First solid (21 wt% Pb) α 20 465°C 5 a + L Composition (at% Pb) 40 10 L a + Mg₂Pb 20 60 Composition (wt% Pb) Last liquid (67 wt% Pb) 30 Mg₂Pb 40 T T L + Mg₂Pb M 18 80 L + Mg₂Pb 70 100 B B+ Mg₂Pb T B + L D T 1200 1000 800 600 400 200 100 (Pb) Temperature (°F)
Pravinbhai
Can you draw on the sketch and show all steps
Referring to Figure 1, please answer the following [NOTE: SHOW YOUR WORK on Figure 1]:a. provide the specific name for the phase boundary lines denoted by A and B. b. identify the phases present at equilibrium in the phase fields denoted by C, D, and E. c. identify the specific name for the point denoted by F. d. What is the maximum solid solubility of Mg in Al? At what temperature does it occur? e. An Al-Mg alloy (10 wt% Mg, 90 wt% Al) is heated slowly (to insure equilibrium) from a temperature of 200 C: i. At what temperature does the first liquid phase form? ii. What is the composition of the liquid phase at the temperature in part i.? iii. At what temperature does complete melting (no solid phase remaining) occur? iv. What is the composition of the last solid remaining prior to complete melting? f. Using the equilibrium phase diagram of Figure 1, identify the phases present, their compositions, and their relative mass fractions at equilibrium for a 70 wt% Mg – 30 wt% Al…
Given the equilibrium phase diagram (a) below, briefly describe the mechanisms of precipitation hardening/strengthening of an aluminium alloy making reference to the transitions shown in (b) below to X, X to A, X to D, A to B and A to C. а +0 D B Time (a) (b) - anedua Temperature