How does etching reveal microstructure?

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Tags

1. #metal
2. #microstructure
3. #different
4. #differences
5. #layer
6. #through
7. #etching
8. #contrast
9. #reflectivity
10. #topography
11. #alloys
12. #creates
13. #chemical
14. #highly
15. #introduced
16. #regions
17. #grinding
18. #deformed
19. #removes
20. #reveal
21. #polishing
22. #during
23. #attack
24. #between
25. #phase
26. #selective