In which metal jet engine's turbine is made? How the turbine fins withstand without breaking against the force

Question

How the turbine fins withstand without breaking against the centrifugal and other forces?

Answer 1

it is an oxide coated aluminium and it is oxide coated to prevent it reacting with water or rain as it is the most reactive metal in the reactivity series its also light too

Answer 2

Turbine wheels must be capable to withstand about 30,000PSI on each blade. Not only the pressure is huge, the temperature is extremely high. In order to withstand this type of environment, the blades are made of special alloys, such as nickle based alloys (usually)

In many cases, the melting temperatures of these materials are lower than the temperature the engine can develop inside. To avoid damage to the blades, a sophisticated cooling system and protective coating (Thermal Barrier Coatings) methods have been developed.

New technology calls for "superalloys" which can dissipate heat more rapidly and weigh less, but the price tag is large!

Answer 3

Titanium was the original choice for turbine blades. Over the years the changing of alloys has given the turbine blade more heat resistance and strength. Also blades are coated with different alloys over and above the original material.
The strength comes from the steel itself and turbines are balanced almost, well perfectly. I used to make a Master that checked turbine blade structure and form. It was tedious and time consuming but necessary as the blades cannot vibrate.
They are looking into and testing carbon fiber composites for turbine blades as an alternative. Lightweight as well as strong.

Answer 4

Interesting question and the answer has changed a lot in the last ten years. The rest of this is a direct quote from the source at the end.

A modern turbine blade alloy is complex in that it contains up to ten significant alloying elements, but its microstructure is very simple. The structure is analogous to an `Inca wall', which consisted of rectangular blocks of stone stacked in a regular array with narrow bands of cement to hold them together.

In the alloy case the `blocks' are an intermetallic compound with the approximate composition Ni3(Al,Ta), whereas the `cement' is a nickel solid solution containing chromium, tungsten and rhenium.

(Tantalum huh? News to me, and apparently single crystal blades are history?)

Answer 5

Iconel. A very strong material. They can withstand such strong forces because of the way in which the blades are constructed. They are basically hollow.

Ever wonder why a bamboo stick is as strong as it is even though it is hollow? Composition and Orientation. Most turbine blades are now made of carbon coposite material, and the way if which the fibers are oriented makes them strong in the direction of the applied force.

Answer 6

Engine turbine blades are made of single-crystal nickel based superalloy.

Answer 7

Plus if you are farting at mock speed do they hear you if you fly by? I was just wondering myself.

Answer 8

probarly titanium or stainless