Mechanism of Crystallization & Crystal Imperfection

Point defects are where an atom is missing or is in an irregular place in the lattice structure. They include self-interstitial atoms, interstitial impurity atoms, substitutional atoms, and vacancies. Point defects are mathematically zero-dimensional defects and can be associated with stress fields and charges, influencing material properties.

1. IPE 105 - Engineering Materials
Mechanism of Crystallization
MOMINUL ISLAM
Lecturer , Department of IPE , MIST
Contacts >> Phone: [phone] Email: [email protected]

2. Crystallization
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3. Schematic Diagram of Structure of Liquid & Solid
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4. Crystallization
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5. Solidification of Pure Metal
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6. Solidification of Pure Metal
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7. Solidification of Pure Metal
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8. Solidification of Pure Metal
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9. Solidification of Pure Metal
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10. Solidification of Pure Metal
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11. Solidification of Pure Metal
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12. Crystallization | Solidification of metals
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13. Crystallization | Solidification of metals
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14. Crystallization | Solidification of metals
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Atoms >> Molecules >> Unit cell (Lattice) >> Crystallite
>> Particle >> Crystal >> Grain

15. Solidification of Metals Vs Alloys
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19. Point Defects: Zero Dimensional Defect
Point defects are where an atom is missing or is in an irregular
place in the lattice structure. They include self-interstitial atoms,
interstitial impurity atoms, substitutional atoms, and vacancies.
Point defects are mathematically zero-dimensional defects and can
be associated with stress fields and charges, influencing material
properties.
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21. Vacancy Defects
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22. Vacancy Defects
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24. Interstitial Impurity Defects
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25. Substitutional Impurity Defects
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26. Line Defects: One Dimensional Defects
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27. Edge Dislocation
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28. Screw Dislocations
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29. Screw Dislocations
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30. THANK YOU