1. The Pb% to gain alpha grain with Mg:Pb on the boundary of alpha at the room temperature 2. Is it possible to gain beta grain with Mg:Pb on the boundary at the room temperature of an alloy? Explain 3. What is the mount of alpha in an alloy (50%Mg +50%Pb) at temperature of 500°C?

1. The Pb% to gain alpha grain with Mg:Pb on the boundary of alpha at the room temperature 2. Is it possible to gain beta grain with Mg:Pb on the boundary at the room temperature of an alloy? Explain 3. What is the mount of alpha in an alloy (50%Mg +50%Pb) at temperature of 500°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

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Concept explainers

Metal Casting

Metal casting is described as a manufacturing process in which a mold cavity is produced by sand, and molten metal is filled inside a mold cavity. The desirable shaped object is achieved after the solidification of molten metal. Large metal objects like machine beds, motor bodies, and others can easily be manufactured using metal casting. The place or shop where metal casting is performed is called foundry.

Question

Figure 1 shows the Mg/Pb phase diagram.
700
L
L
600
+
M
a + L
Mg, Pb
500
465
400
L.
Mg Pb
300
200
a + Mg Pb
B+
Mg Pb
100
20
40
60
80
100
Mg
Composition (wt% Pb)
Pb
Mg Pb
Figure 1 The Mg/Pb phase diagram
QUESTION 1-A
Show on the diagram the following:
1. The Pb% to gain alpha grain with Mg.Pb on the boundary of alpha at the
room temperature
2. Is it possible to gain beta grain with Mg.Pb on the boundary at the room
temperature of an alloy? Explain
3. What is the mount of alpha in an alloy (50%Mg +50%Pb) at temperature of
500°C?
4. What is the mount of alpha in the alloy (50%Mg +50%Pb) at the room
temperature?
5. What is Mg2Pb? Explain
6. If the requirement for an alloy to have 100 pph eutectic at the room
temperature, what is the metal Pb percent?
7. Is it possible to have an alloy containing beta and alpha at the room
temperature? Explain
Temperature (°C)

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