e. What type of defect is a vacancy and illustrate how that is different from an interstitial defect? f. What is the fraction of vacancies present at the melting temperature of Cu (1084°C)? Describe the feature (green parallel structures) that is noted by the arrow labeled c.

e. What type of defect is a vacancy and illustrate how that is different from an interstitial defect? f. What is the fraction of vacancies present at the melting temperature of Cu (1084°C)? Describe the feature (green parallel structures) that is noted by the arrow labeled c.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 9R

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Concept explainers

Crystalline Imperfections

The crystalline imperfections are described as the geometrical defects in the crystal due to incorrect arrangement of atoms, impurity, vacancy, and many more. It is not possible to achieve a perfect or ideal crystal, practically.

Question

e. What type of defect is a vacancy and illustrate how that is different from an
interstitial defect?
f. What is the fraction of vacancies present at the melting temperature of Cu
(1084°C)?
Describe the feature (green parallel structures) that is noted by the arrow labeled c.

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