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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
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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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.
Transcribed Image Text: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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