Solution-strengthened iron-based alloys;

GH 10 15、GH 1035、GH 1040、GH 1 13 1、GH 1 140

Age hardening Fe-based alloy;

GH20 18、GH2036、GH2038、GH2 130、GH2 132、GH2 135、GH2 136、GH2302、GH2696

Solid solution strengthening nickel-based alloy;

GH3030、GH3039、GH3044、GH3028、GH3 128、GH3536、GH605、GH600

Age hardening nickel-base alloy;

GH4033、GH4037、GH4043、GH4049、GH4 133、GH4 133B、GH4 169、GH4 145、GH4090

Foreign superalloys are called inconel series incoloy series Hastelloy series.

Composition and properties

Nickel-based alloys are the most widely used and have the highest high temperature strength among superalloys. The main reasons are as follows: firstly, more alloying elements can be dissolved in nickel-based alloys, and good structural stability can be maintained; Secondly, the coherent and ordered A3B intermetallic compound γ'[Ni3(Al, Ti)] phase can be formed as the strengthening phase, which can effectively strengthen the alloy and obtain higher high-temperature strength than superalloy and cobalt-based superalloy. Thirdly, Cr-containing Ni-based alloys have better corrosion resistance to anode and gas than superalloys. Nickel-based alloy contains more than ten kinds of elements, among which Cr mainly plays the role of anti-yang and anti-corrosion, and other elements mainly play the role of strengthening. According to its strengthening methods, it 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.