Why don’t jet engines melt?

How does a jet engine not melt?
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0:00 How a jet engine works
3:18 Why are jet engines so big?
5:17 The Inside of a Jet Engine
8:49 Edge Dislocation
11:11 The First Jet Engine
12:48 Inside the Rolls-Royce Precision Casting Facility
17:07 Nickel Superalloys – Gamma Prime
23:58 Crystal Structure
25:38 Making a Turbine Blade
32:22 Why don’t turbine blades melt?
35:30 Throwing Sand Into a Jet Engine

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A big thanks to Ben Todd, James Banks, Ben Fifoot, Doug Smith, Stefan Wagner, Rumaanah Hoosen and the rest of the team at Rolls-Royce.
Credit to : Veritasium