7) Which of the following statement(s) is/are correct? i. In case of excessive cold-working, the metal is likely to fracture before reaching the desired size and shape. ii. The fracture is because of reduced value of dislocation density in the material. iii. Intermediate annealing operations are introduced to soften the cold-worked metal and restore the ductility. i and ii Only ii and iii only i, and iii only Oi, ii and i

7) Which of the following statement(s) is/are correct? i. In case of excessive cold-working, the metal is likely to fracture before reaching the desired size and shape. ii. The fracture is because of reduced value of dislocation density in the material. iii. Intermediate annealing operations are introduced to soften the cold-worked metal and restore the ductility. i and ii Only ii and iii only i, and iii only Oi, ii and i

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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A) What are the two conditions for causing a part to break by crack propagation?Are the following elements favorable or unfavorable to crack propagation in a metal alloy? Justify your answer.1. Presence of heterogeneities;2.Increase in the volume of the piece;3. Good finish4. Presence of porosity;5. Increased ductility;6. Increased work hardening;7. Decrease in grain size.
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