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What are different kinds of defects in metallic systems.Do you agree or disagree that defects in metals are desired feature? Give an example to support your view. 4.
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Answer #1

Different types of defects in metallic systems

  • Point defects - vacancy , impurities
  • Line defects - Dislocations (edge and screw)
  • Surface defects - grain boundary, twin boundary
  • Volume defects - casting defects, forging defects

Defects in metals are a desirable feature , because it is due to Dislocations movement only the cold working of metals is possible.

Also impurities ( alloy) block the movement of dislocation and thereby increase the strength of alloy.

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