High Temperature Alloy

Superalloy is a kind of metal material with iron, nickel and cobalt as the base material, which can work for a long time at high temperature above 600℃ and under certain stress.

(1)High temperature strength
(2)Good oxidation resistance and thermal corrosion resistance
(3)Good fatigue performance, fracture toughness and plasticity

Superalloy is a single austenitic matrix structure, which has good stability and reliability at various temperatures.

According to alloy matrix elements

(1)Iron base (iron nickel base) superalloy
(2)Nickel-based superalloy
(3)Cobalt base superalloy
(4)Chrome base superalloy

According to alloy strengthening type

(1)Solid solution strengthening alloy
(2)Aging precipitation strengthening alloy

Final heat treatment

(1)Solution treatment,
(2)Intermediate heat treatment (also known as low temperature solution or high temperature aging)
(3)Aging treatment

Process annealing heat treatment

(1)Stress relief treatment
(2)Recrystallization annealing

High-temperature wear resistance and corrosion resistance of high-temperature alloy: the requirements are not high temperature strength, the composition of this kind of alloy is based on nickel, iron or cobalt, and contains 20% ~ 35% chromium, a large number of tungsten, molybdenum and other solid solution strengthening elements, and aluminum, titanium and other γ forming elements are required to contain very little or no.

Aerospace engine

(1)Aero-engine hot end parts
(2) Hot end parts of aerospace engines (rocket engines)
(3) Hot end parts of gas turbines

Civil industrial field

Since the 1970s, super alloys have been popularized and applied in civil industrial sectors (atomic energy, energy and power, transportation, petrochemical industry, metallurgical mines and glass building materials, etc.). Some of these super alloys mainly use the high temperature and high strength characteristics of super alloys, while the other part mainly uses the high temperature wear and corrosion resistance of super alloys.