what is the material of gas turbine.?

Answer 1

previously, steel was employed. later, to acheive high strength to weight ratio,it is replaced titanium and nickel alloys.

a conventional fine grain titanium alloy - 6% aluminium and 4% vanadium (Ti6Al4V) is used. It is simple in terms of chemistry, with the aluminium offering strengthening and low density, and the vanadium making hot working of the material easier. It is used for discs and compressor blades up to about 350°C, but excellent superplastic forming and solid state diffusion bonding capabilities make it particularly suitable for the wide chord blade.

Rolls-Royce is studying the future possibility of titanium based metal matrix composites with selective reinforcement provided by silicon carbide monofilaments to control blade untwist.The composite can be considered as an alternative core to the titanium honeycomb or corrugation.

Answer 2

The body is normally F91 or F22.
The turbine shaft is 4140 or some alloy steel coated with tungsten carbide on the wear areas.

Titanium would be rediculously expensive unless you are talking about an aircraft turbine instead of a power generating, land based turbine.

Answer 3

A gas turbine is a fairly complex unit with many pieces of different materials. You need to be very specific about what parts you are asking about and if you also mean the support items such as switches, oil pumps, etc.

Answer 4

There are many turbines for many purposes. Aluminum can be used, most are steel, and in some applications titanium is used. Titanium is used in high performance diesel engines because it allows higher turbine speeds than a steel turbo.

Answer 5

Titanium and super alloy with nickel as its base