The annealed low carbon steel behavior is approximated by σ = 10000ε 0.25 MPa. Evaluate (a) The yield strength after the bar is cold worked for __%. (b) If the same annealed low carbon steel bar is initially cold worked __%, followed by additional cold work of __%, determine the probable yield strength of the final bar. (c If the same annealed low carbon steel bar was cold worked for an unknown amount and then cold worked 20% more and found to have a yield strength of __ MPa. What was the unknown amount of cold work. (d) Discuss the variation of yield stress in question a & b. (e) Discuss the effect of mechanical working on variation of properties with respect to grain size. Also draw a clear graph of properties versus grain size for ductility and strength. σ = 10000ε 0.24 (a) 30% (b) initially 15% followed by 20% (c) yield strength of 7500 MPa
The annealed low carbon steel behavior is approximated by σ = 10000ε 0.25 MPa. Evaluate (a) The yield strength after the bar is cold worked for __%. (b) If the same annealed low carbon steel bar is initially cold worked __%, followed by additional cold work of __%, determine the probable yield strength of the final bar. (c If the same annealed low carbon steel bar was cold worked for an unknown amount and then cold worked 20% more and found to have a yield strength of __ MPa. What was the unknown amount of cold work. (d) Discuss the variation of yield stress in question a & b. (e) Discuss the effect of mechanical working on variation of properties with respect to grain size. Also draw a clear graph of properties versus grain size for ductility and strength. σ = 10000ε 0.24 (a) 30% (b) initially 15% followed by 20% (c) yield strength of 7500 MPa
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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The annealed low carbon steel behavior is approximated by σ = 10000ε 0.25 MPa. Evaluate
(a) The yield strength after the bar is cold worked for __%.
(b) If the same annealed low carbon steel bar is initially cold worked __%, followed by additional cold work of __%, determine the probable yield strength of the final bar.
(c If the same annealed low carbon steel bar was cold worked for an unknown amount and then cold worked 20% more and found to have a yield strength of __ MPa. What was the unknown amount of cold work.
(d) Discuss the variation of yield stress in question a & b.
(e) Discuss the effect of mechanical working on variation of properties with respect to grain size. Also draw a clear graph of properties versus grain size for ductility and strength.
σ = 10000ε 0.24
(a) 30%
(b) initially 15% followed by 20%
(c) yield strength of 7500 MPa
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