Metals Flashcards
1
Q
Work Hardening
A
Many metals will harden and become more brittle as you bend or hammer them in to new shapes.
2
Q
Annealing
A
Heat the metal up above its recrystallisation temperature
- decreases the hardness
- restoring the ductility to so it be further worked on without cracking
3
Q
Hardening
A
Heating the steel to red hot and then quenching to reduce temperature fast
- becomes brittle
4
Q
Tempering
A
Reheating the metal to a lower temperature than first time around and then leaving to cool more slowly
(AFTER HARDENING)
