(a) The influence of grain size on the yield strength of a Cu-20Zn brass is shown in Table Q3.a. 1. il. Table Q3.a. Variation of Yield stress, dy, with grain diameter, d, for Cu-20Zn brass d [mm] dy [MPa] 30 55 85 127 160 190 1.00 0.111 0.0275 0.0123 0.00704 0.00444 Plot a suitable graph and describe the relationship between grain size and yield strength with a suitable equation. From your graph, calculate values for do (resistance of the lattice to dislocation motion) and ky (the strengthening coefficient). Hence calculate the stress at a grain size of 50 µm.
(a) The influence of grain size on the yield strength of a Cu-20Zn brass is shown in Table Q3.a. 1. il. Table Q3.a. Variation of Yield stress, dy, with grain diameter, d, for Cu-20Zn brass d [mm] dy [MPa] 30 55 85 127 160 190 1.00 0.111 0.0275 0.0123 0.00704 0.00444 Plot a suitable graph and describe the relationship between grain size and yield strength with a suitable equation. From your graph, calculate values for do (resistance of the lattice to dislocation motion) and ky (the strengthening coefficient). Hence calculate the stress at a grain size of 50 µm.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow
ideas from gpt, but please do not believe its answer.Very very grateful!
![(a) The influence of grain size on the yield strength of a Cu-20Zn brass is shown in Table
Q3.a.
1.
il.
Table Q3.a. Variation of Yield stress, dy, with
grain diameter, d, for Cu-20Zn brass
d [mm]
ay [MPa]
1.00
0.111
0.0275
0.0123
0.00704
0.00444
30
55
85
127
160
190
Plot a suitable graph and describe the relationship between grain size and yield
strength with a suitable equation.
From your graph, calculate values for do (resistance of the lattice to dislocation
motion) and k, (the strengthening coefficient). Hence calculate the stress at a grain
size of 50 µm.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2256d724-c606-4366-9dc1-f1aca4b67a6e%2F9d5d75b5-4324-46a7-a151-0d07847e9133%2Fmnisinr_processed.png&w=3840&q=75)
Transcribed Image Text:(a) The influence of grain size on the yield strength of a Cu-20Zn brass is shown in Table
Q3.a.
1.
il.
Table Q3.a. Variation of Yield stress, dy, with
grain diameter, d, for Cu-20Zn brass
d [mm]
ay [MPa]
1.00
0.111
0.0275
0.0123
0.00704
0.00444
30
55
85
127
160
190
Plot a suitable graph and describe the relationship between grain size and yield
strength with a suitable equation.
From your graph, calculate values for do (resistance of the lattice to dislocation
motion) and k, (the strengthening coefficient). Hence calculate the stress at a grain
size of 50 µm.
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