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Quiz%202%20-soln%205

# Quiz%202%20-soln%205 - 3 Dislocation Slip and...

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Unformatted text preview: 3.) Dislocation Slip and Strengthening (22 points) Grain size. «1 (mm) 10" 10" 5 x 10" Yield Mil (Bl) 4 3 12 15 6‘": (WW) a.) From the above plot of yield strength versus (grain diameter)'”2 for a 70Cu-302n cartridge brass, determine the values for the constants co and ky. Using these values calculate the yield strength of this alloy when the average grain diameter 18 1x103 mm. ao= .......Q..5.....‘.’.\.V,«.. .........(.In!¢rc¢ya : \ \45- 1g: 50 . “Y" n. .n. s :2: . ...!f‘j5...Nev..(m).‘.'.'i.. ky = (3., .03 + k d u; d- 2.5+ n :65 3: 25+ (u Law) 29 zqs 3: 1.20m Yield strength of brass alloy witha 1x103 mm grain diameter =...".‘.1.Q.Mp,f. .. ...
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