What is the material of high temperature alloy

Main grades of high temperature alloys.

Solid solution strengthened iron-based alloys.

GH1015, GH1035, GH1040, GH1131, GH1140

Age-hardening iron-based alloys.

GH2018, GH2036, GH2038, GH2130, GH2132, GH2135, GH2136, GH2302, GH2696

Solution-strengthened nickel-based alloys.

GH3030, GH3039, GH3044, GH3028, GH3128, GH3536, GH605,GH600

Age-hardening nickel-based alloys

GH4033、GH4037、GH4043、GH4049、GH4133、GH4133B、GH4169、GH4145、GH4090

Foreign high temperature alloys called contain inconel series incoloy series Hastelloy series

Composition and performance

Nickel-based alloys are the most widely used high temperature alloys, high temperature strength of the highest class of alloys. The main reason, one is that nickel-based alloys can dissolve more alloying elements, and can maintain good organizational stability; second is the formation of co-lattice ordered A3B type intermetallic compound γ'[Ni3(Al, Ti)] phase as a strengthening phase, so that the alloy is effectively strengthened to obtain higher high-temperature strength than iron-based high-temperature alloys and cobalt-based high-temperature alloys; third is that nickel-based alloys containing chromium have a better resistance to yanging and high temperature than iron-based high-temperature alloys. Alloys have better resistance to yang and gas corrosion resistance. Nickel-based alloys contain more than ten kinds of elements, of which Cr mainly plays a role in anti-yangcheng and anti-corrosion, and other elements mainly play a strengthening role. According to their strengthening effect can be divided into: solid solution strengthening elements, such as tungsten, molybdenum, cobalt, chromium and vanadium; precipitation strengthening elements, such as aluminum, titanium, niobium and tantalum; grain boundary strengthening elements, such as boron, zirconium, magnesium and rare earth elements.

Nickel-based high-temperature alloys are solid solution-reinforced and precipitation-reinforced alloys according to the strengthening method.

Solid solution strengthened alloy

With a certain high temperature strength, good resistance to yang, thermal corrosion, cold and thermal fatigue resistance, and good plasticity and weldability, etc., can be used in the manufacture of high operating temperature, not a large stress (a few kilograms per square millimeter force) components, such as the combustion chamber of gas turbines

Precipitation-strengthened alloys

Usually a combination of solid solution strengthening, precipitation strengthening and grain boundary strengthening three kinds of reinforcement, and thus has good high temperature creep strength, pi labor resistance, resistance to yang and thermal corrosion resistance, can be used to make high-temperature components under high stress (more than ten kilograms per square millimeter force, such as the turbine blades of gas turbines.