SECTION B The yield stresses (ơY) have been measured using steel and aluminum specimens of various grain 24 а). sizes, as follows: Material D (um) OY (MPa) Steel 61.5 161 137 128 Aluminum 11.1 236 100 223 (i) Determine the coefficients oo and ky in the Hall- Petch for these two materials. (ii) Determine the yield stress in each material for a grain size of d=30 µm. b) Draw the possible set of slip system in FCC unit cell.

SECTION B The yield stresses (ơY) have been measured using steel and aluminum specimens of various grain 24 а). sizes, as follows: Material D (um) OY (MPa) Steel 61.5 161 137 128 Aluminum 11.1 236 100 223 (i) Determine the coefficients oo and ky in the Hall- Petch for these two materials. (ii) Determine the yield stress in each material for a grain size of d=30 µm. b) Draw the possible set of slip system in FCC unit cell.

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

Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing. 

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please answer correctly and completly

SECTION B
Q.4 a).
The yield stresses (oy) have been measured using steel and aluminum specimens of various grain
sizes, as follows:
Material
D (µm)
OY (MPa)
Steel
61.5
161
137
128
Aluminum
11.1
236
100
223
(i) Determine the coefficients ơo and ky in the Hall- Petch for these two materials.
(ii) Determine the yield stress in each material for a grain size of d=30 µm.
b)
Draw the possible set of slip system in FCC unit cell.

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