I used to work in this industry. One thing that might be interesting for people is the metals do not actually withstand the temperatures directly. Instead cooling vanes are needed throughout various parts of the engine. This is why shutting a gas turbine (aka jet engine) down from full power will destroy it. It is necessary to take the engine down to a lower power setting first and then continue to spin the engine (calling motoring the engine) for quite a while even after it is turned off.
Another interesting thing is some engines cannot withstand certain RPM ranges as the compressor and power turbine can get into a catastrophic resonance. A good example is the T700 (used in the Blackhawk).
Another interesting thing is some engines cannot withstand certain RPM ranges as the compressor and power turbine can get into a catastrophic resonance. A good example is the T700 (used in the Blackhawk).