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When atoms are displaced in two separate planes perpendicular to each other, the defect so produced is known as
- a)Edge dislocation
- b)Screw dislocation
- c)Stacking fault
- d)Schottky defect
Correct answer is option 'A'. Can you explain this answer?
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When atoms are displaced in two separate planes perpendicular to each ...
Edge Dislocation:
An edge dislocation is a type of crystallographic defect in which a plane of atoms is displaced in two separate planes perpendicular to each other. This results in a region of excess atoms on one side and a region of missing atoms on the other side of the plane. Edge dislocations are common in materials with a close-packed structure, such as metals and ceramics.
Causes:
Edge dislocations can be caused by a number of factors, including plastic deformation, thermal cycling, and radiation damage. They can also be intentionally introduced into a material through the process of doping, which involves adding impurities to the crystal lattice.
Effects:
Edge dislocations can have a significant impact on the mechanical properties of a material. They can increase the strength and hardness of a material, but they can also decrease its ductility and toughness. In addition, edge dislocations can act as sites for crack initiation and propagation, which can lead to failure of the material under stress.
Conclusion:
In conclusion, edge dislocations are a common crystallographic defect in materials with a close-packed structure. They can be caused by a variety of factors and can have a significant impact on the mechanical properties of a material. Understanding the nature and effects of edge dislocations is important for the design and development of new materials with improved properties.
An edge dislocation is a type of crystallographic defect in which a plane of atoms is displaced in two separate planes perpendicular to each other. This results in a region of excess atoms on one side and a region of missing atoms on the other side of the plane. Edge dislocations are common in materials with a close-packed structure, such as metals and ceramics.
Causes:
Edge dislocations can be caused by a number of factors, including plastic deformation, thermal cycling, and radiation damage. They can also be intentionally introduced into a material through the process of doping, which involves adding impurities to the crystal lattice.
Effects:
Edge dislocations can have a significant impact on the mechanical properties of a material. They can increase the strength and hardness of a material, but they can also decrease its ductility and toughness. In addition, edge dislocations can act as sites for crack initiation and propagation, which can lead to failure of the material under stress.
Conclusion:
In conclusion, edge dislocations are a common crystallographic defect in materials with a close-packed structure. They can be caused by a variety of factors and can have a significant impact on the mechanical properties of a material. Understanding the nature and effects of edge dislocations is important for the design and development of new materials with improved properties.
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When atoms are displaced in two separate planes perpendicular to each other, the defect so produced is known asa)Edge dislocationb)Screw dislocationc)Stacking faultd)Schottky defectCorrect answer is option 'A'. Can you explain this answer?
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