Chapter 11 - Mirco-structure and Metallography | Microstructure Flashcards
1
Q
Microstructure
A
Structure of a material on a micron level.
Determines materials properties (e.g. Yield strength or Fracture toughness)
2
Q
Metalography
A
Process in which a Sample is prepared so as to reveal the microstructure under a optical microscope
3
Q
Metalography - Process
A
Sampling (selecting correct regions of the sample)
Polishing ( Uniform material removal = flat sample)
Etching (slective electro-chemical removal = non-uniform surface)
4
Q
Why do some regions look bright and some dark in an optical micrograph?
A
In optical micrograph the main mechanism of contrast is reflection.
