1. Figure 1 shows the effect of cold work and annealing temperature on the properties of a copper alloy that is cold work 75%. 120 Property 100 80 Tensile strength (ksi) (•) 60 60 40 Grain size (10-3 mm) (A) Electrical conductivity (%) (■) 20 20 Elongation (%) (x) T 0 25 50 75 100 0 200 400 600 800 Percent cold work Annealing temperature (°C) Recovery Grain growth Recrystallization Figure 1: The effect of cold work and annealing temperature on the properties of a copper alloy that is cold work 75%. a) One of the disadvantages of cold work is the generation of residual stress. Explain how we can eliminate the residual stress during cold work. b) Explain the three stages of the annealing processes of the metallic material as shown in Figure 1.
1. Figure 1 shows the effect of cold work and annealing temperature on the properties of a copper alloy that is cold work 75%. 120 Property 100 80 Tensile strength (ksi) (•) 60 60 40 Grain size (10-3 mm) (A) Electrical conductivity (%) (■) 20 20 Elongation (%) (x) T 0 25 50 75 100 0 200 400 600 800 Percent cold work Annealing temperature (°C) Recovery Grain growth Recrystallization Figure 1: The effect of cold work and annealing temperature on the properties of a copper alloy that is cold work 75%. a) One of the disadvantages of cold work is the generation of residual stress. Explain how we can eliminate the residual stress during cold work. b) Explain the three stages of the annealing processes of the metallic material as shown in Figure 1.
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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Transcribed Image Text:1. Figure 1 shows the effect of cold work and annealing temperature on the properties of a copper
alloy that is cold work 75%.
120
Property
100
80
Tensile strength (ksi) (•)
60
60
40
Grain size (10-3 mm) (A)
Electrical
conductivity (%) (■)
20
20
Elongation (%) (x)
T
0
25
50 75 100
0
200
400
600
800
Percent cold work
Annealing temperature (°C)
Recovery
Grain growth
Recrystallization
Figure 1: The effect of cold work and annealing temperature on the properties of a
copper alloy that is cold work 75%.
a) One of the disadvantages of cold work is the generation of residual stress. Explain how we
can eliminate the residual stress during cold work.
b) Explain the three stages of the annealing processes of the metallic material as shown in
Figure 1.
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