Chapter 5 -
Chapter 5 -2
ISSUES TO ADDRESS...
• What types of defects arise in solids?
• Can the number and type of defects be varied
• How do defects affect material properties?
• Are defects undesirable?
IMPERFECTIONS IN SOLIDS
•Reading: pp128 –136, 140-147
Chapter 5 -3
•Solidification- result of casting of molten material
•Nuclei grow to form crystals –grain structure
•Start with a molten material –all liquid
Imperfections in Solids
•Crystals grow until they meet each other
Adapted from Fig. 5.19 (b), Callister & Rethwisch 3e.